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100-865: Alpha Delta Pi is a member of the National Panhellenic Conference . The sorority's national philanthropic partner is the Ronald McDonald House Charities . Its executive office is located in Atlanta , Georgia. Alpha Delta Pi was first founded as the Adelphean Society on May 15, 1851, at Wesleyan Female College in Macon, Georgia . The six founders included Eugenia Tucker Fitzgerald, Elizabeth Williams Mitchell, Sophronia Woodruff Dews, Octavia Andrew Rush, Mary Evans Glass, and Ella Pierce Turner. In 1904,

200-492: A Boston meeting, with the intention to meet again in 1893. In 1902, Alpha Phi invited Pi Beta Phi , Kappa Alpha Theta , Kappa Kappa Gamma, Delta Gamma , Gamma Phi Beta , Delta Delta Delta , Alpha Chi Omega , and Chi Omega to a conference in Chicago on May 24 to set standards for collegiate sororities. Alpha Chi Omega and Chi Omega were unable to attend and joined the following year. The remaining seven groups met and

300-417: A buildup of scent attracting the attention of predators, the lioness moves her cubs to a new den site several times a month, carrying them one-by-one by the nape of the neck. Usually, the mother does not integrate herself and her cubs back into the pride until the cubs are six to eight weeks old. Sometimes the introduction to pride life occurs earlier, particularly if other lionesses have given birth at about

400-549: A closer relationship with P. leo melanochaita . Lion samples from some parts of the Ethiopian Highlands cluster genetically with those from Cameroon and Chad, while lions from other areas of Ethiopia cluster with samples from East Africa. Researchers, therefore, assume Ethiopia is a contact zone between the two subspecies. Genome -wide data of a wild-born historical lion sample from Sudan showed that it clustered with P. l. leo in mtDNA-based phylogenies, but with

500-494: A committee of three, led by Jewel Davis, contacted Attorney Dupont Guerry, the college's president, about to the procedure to become a national organization. They secured a charter of incorporation from the state of Georgia. In 1905, the Adelphean Society changed its name to Alpha Delta Phi . At the time of nationalization, Alpha Delta Phi, as a women's fraternity , had sixty active members and 3,000 alumnae. In 1905,

600-471: A constant lookout for circling vultures, which indicate the death or distress of an animal. Most carrion on which both hyenas and lions feed upon are killed by hyenas rather than lions. Carrion is thought to provide a large part of lion diet. Lions and spotted hyenas occupy a similar ecological niche and compete for prey and carrion; a review of data across several studies indicates a dietary overlap of 58.6%. Lions typically ignore hyenas unless they are on

700-662: A delegate board with at least one representative from each of its 18 senior members. That year, the Congress also began plans for a centralized headquarters to coordinate and streamline interactions with the separate sororities. Shortly before its merger with the NPC, the Association of Educational Sororities (AES) was part of a larger multi-panhellenic association, the Council of Affiliated Panhellenics. Created in 1941, it included

800-425: A favoured position in the group, either stalking prey on the "wing", then attacking, or moving a smaller distance in the centre of the group and capturing prey fleeing from other lionesses. Males attached to prides do not usually participate in group hunting. Some evidence suggests, however, that males are just as successful as females; they are typically solo hunters who ambush prey in small bushland. They may join in

900-470: A few reported cases of old and wounded lions falling prey to wild dogs. Most lionesses reproduce by the time they are four years of age. Lions do not mate at a specific time of year and the females are polyestrous . Like those of other cats, the male lion's penis has spines that point backward. During withdrawal of the penis, the spines rake the walls of the female's vagina, which may cause ovulation . A lioness may mate with more than one male when she

1000-548: A heavier mane. On average, Asiatic lions have sparser manes than African lions. This feature likely evolved to signal the fitness of males to females. Males with darker manes appear to have greater reproductive success and are more likely to remain in a pride for longer. They have longer and thicker hair and higher testosterone levels, but they are also more vulnerable to heat stress. The core body temperature does apparently not increase regardless of sex, season, feeding time, length and colour of mane, but only surface temperature

1100-602: A high affinity to P. l. melanochaita . This result suggested that the taxonomic position of lions in Central Africa may require revision. Other lion subspecies or sister species to the modern lion existed in prehistoric times: The Panthera lineage is estimated to have genetically diverged from the common ancestor of the Felidae around 9.32 to 4.47 million years ago to 11.75 to 0.97 million years ago . Results of analyses differ in

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1200-480: A key species sought for exhibition in zoological gardens across the world since the late 18th century. Cultural depictions of lions were prominent in Ancient Egypt , and depictions have occurred in virtually all ancient and medieval cultures in the lion's historic and current range. The English word lion is derived via Anglo-Norman liun from Latin leōnem (nominative: leō ), which in turn

1300-501: A kill or are being harassed, while the latter tend to visibly react to the presence of lions with or without the presence of food. In the Ngorongoro crater , lions subsist largely on kills stolen from hyenas, causing them to increase their kill rate. In Botswana's Chobe National Park, the situation is reversed as hyenas there frequently challenge lions and steal their kills, obtaining food from 63% of all lion kills. When confronted on

1400-514: A kill, hyenas may either leave or wait patiently at a distance of 30–100 m (98–328 ft) until the lions have finished. Hyenas may feed alongside lions and force them off a kill. The two species attack one another even when there is no food involved for no apparent reason. Lions can account for up to 71% of hyena deaths in Etosha National Park . Hyenas have adapted by frequently mobbing lions that enter their home ranges. When

1500-519: A kill. Crippled lions and cubs may fall victim to hyenas and leopards or be trampled by buffalo or elephants. Careless lions may be maimed when hunting prey. Nile crocodiles may also kill and eat lions, evidenced by the occasional lion claw found in crocodile stomachs. Ticks commonly infest the ears, neck and groin regions of the lions. Adult forms of several tapeworm species of the genus Taenia have been isolated from lion intestines, having been ingested as larvae in antelope meat. Lions in

1600-447: A law enforcement investigation before their school could begin its own investigation. In 2016, collegiate members began discussing membership offers for transgender women , which was supported by some national organizations with changes to their national policies; however, some national organizations delayed membership offers for trans women due to fears about Title IX exemption status, which caused dissent in local chapters. Though

1700-558: A lion makes when sniffing chemical signals and involves an open mouth with bared teeth, raised muzzle, wrinkled nose, closed eyes and relaxed ears. Lions also use chemical and visual marking; males spray urine and scrape plots of ground and objects within the territory. The lion's repertoire of vocalisations is large; variations in intensity and pitch appear to be central to communication. Most lion vocalisations are variations of growling , snarling , meowing and roaring. Other sounds produced include puffing, bleating and humming. Roaring

1800-473: A longer evolutionary history than genetically less diverse lion samples from Asia and West and Central Africa. A whole genome-wide sequence of lion samples showed that samples from West Africa shared alleles with samples from Southern Africa, and samples from Central Africa shared alleles with samples from Asia. This phenomenon indicates that Central Africa was a melting pot of lion populations after they had become isolated, possibly migrating through corridors in

1900-399: A loose pride while females associate with up to 12 other females, forming a stronger pride together with their cubs. Female and male lions associate only when mating. Coalitions of males hold territory for a longer time than single lions. Males in coalitions of three or four individuals exhibit a pronounced hierarchy, in which one male dominates the others and mates more frequently. The lion

2000-494: A national voice on contemporary issues of sorority life. Founded in 1902, the NPC is one of the oldest and largest women's membership organizations, representing more than 4 million women at over 650 college and university campuses and 4,600 local alumnae chapters in the U.S. and Canada. Each year, NPC-affiliated collegians and alumnae donate more than $ 5 million to causes, provide $ 2.8 million in scholarships to women, and volunteer 500,000 hours in their communities. The organization

2100-433: A nomad is a "range". Males associated with a pride patrol the fringes. Both males and females defend the pride against intruders, but the male lion is better-suited for this purpose due to its stockier, more powerful build. Some individuals consistently lead the defense against intruders, while others lag behind. Lions tend to assume specific roles in the pride; slower-moving individuals may provide other valuable services to

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2200-554: A nomadic phase before gaining residence in a pride. A study undertaken in the Serengeti National Park revealed that nomadic coalitions gain residency at between 3.5 and 7.3 years of age. In Kruger National Park, dispersing male lions move more than 25 km (16 mi) away from their natal pride in search of their own territory. Female lions stay closer to their natal pride. Therefore, female lions in an area are more closely related to each other than male lions in

2300-441: A policy explicitly open to trans and non-binary individuals, and sororities open to anyone who identifies as a woman include: Alpha Chi Omega , Alpha Delta Pi , Alpha Epsilon Phi , Alpha Sigma Tau , Chi Omega , Delta Gamma , Gamma Phi Beta , Kappa Alpha Theta , Kappa Delta , Kappa Kappa Gamma , Phi Sigma Sigma , Sigma Sigma Sigma , and Theta Phi Alpha . Sororities open to anyone who identifies and lives as

2400-425: A reed-bed, a cave, or some other sheltered area, usually away from the pride. She will often hunt alone while the cubs are still helpless, staying relatively close to the den. Lion cubs are born blind, their eyes opening around seven days after birth. They weigh 1.2–2.1 kg (2.6–4.6 lb) at birth and are almost helpless, beginning to crawl a day or two after birth and walking around three weeks of age. To avoid

2500-565: A short, rounded head, a reduced neck, and round ears; males have broader heads. The fur varies in colour from light buff to silvery grey, yellowish red, and dark brown. The colours of the underparts are generally lighter. A new-born lion has dark spots , which fade as the cub reaches adulthood, although faint spots may still be seen on the legs and underparts. The tail of all lions ends in a dark, hairy tuft that, in some lions, conceals an approximately 5 mm (0.20 in)-long, hard "spine" or "spur" composed of dermal papillae. The functions of

2600-424: A woman include: Alpha Gamma Delta , Alpha Omicron Pi , Alpha Xi Delta , Delta Delta Delta , Pi Beta Phi , Sigma Delta Tau , and Sigma Kappa , while Zeta Tau Alpha specifies that the individual must consistently identify and live as a woman. A Panhellenic Council consists of executive board members at each university or college. Each institution holds different executive positions based on its size and

2700-429: A year old and begin to hunt effectively when nearing the age of two. Single lions are capable of bringing down zebra and wildebeest, while larger prey like buffalo and giraffe are riskier. In Chobe National Park , large prides have been observed hunting African bush elephants up to around 15 years old in exceptional cases, with the victims being calves, juveniles, and even subadults. In typical hunts, each lioness has

2800-404: Is in heat . Lions of both sexes may be involved in group homosexual and courtship activities. Males will also head-rub and roll around with each other before mounting each other. Generation length of the lion is about seven years. The average gestation period is around 110   days; the female gives birth to a litter of between one and four cubs in a secluded den, which may be a thicket,

2900-765: Is a conference , not a congress , as it enacts no legislation and only regulates its own meetings. Other than basic agreements which its member groups must unanimously vote to follow, the NPC confines itself to recommendations and advice and acts as a court of final appeal in any college Panhellenic disputes. One of its services is providing advisors for sororities. Early histories of sororities contain accounts of rushing and pledging agreements or compacts among sororities on various campuses, and many stories of cooperation and mutual assistance. However, no actual Panhellenic organization existed and no uniform practices were observed. The NPC's origin can be traced to 1891, when Kappa Kappa Gamma invited all seven existing sororities to

3000-905: Is a generalist hypercarnivore and is considered to be both an apex and keystone predator due to its wide prey spectrum. Its prey consists mainly of medium-sized to large ungulates , particularly blue wildebeest , plains zebra , African buffalo , gemsbok and giraffe . It also frequently takes common warthog despite it being much smaller. In India, chital and sambar deer are the most common wild prey, while livestock contributes significantly to lion kills outside protected areas. It usually avoids fully grown adult elephants , rhinoceros and hippopotamus and small prey like dik-dik , hyraxes , hares and monkeys . Unusual prey include porcupines and small reptiles. Lions kill other predators but seldom consume them. Young lions first display stalking behaviour at around three months of age, although they do not participate in hunting until they are almost

3100-553: Is a mixture of dry savannah forest and very dry, deciduous scrub forest . In Africa, the range of the lion originally spanned most of the central African rainforest zone and the Sahara desert. In the 1960s, it became extinct in North Africa, except in the southern part of Sudan. During the mid- Holocene , around 8,000-6,000 years ago, the range of lions expanded into Southeastern and Eastern Europe, partially re-occupying

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3200-428: Is a subscription for members and alumnae and promotes leadership on and off campus. The Adelphean has a partnership with Ronald McDonald House Charities and other local organizations. Its first issue was published March 12, 1907, by a select group of national Alpha Delta Pi leaders and included a collection of letters from outstanding members and updates on the expansion of the secret society. At this time, Alpha Delta Pi

3300-953: Is affected. Unlike in other felid species, female lions consistently interact with multiple males at once. Another hypothesis suggests that the mane also serves to protect the neck in fights, but this is disputed. During fights, including those involving maneless females and adolescents, the neck is not targeted as much as the face, back, and hindquarters. Injured lions also begin to lose their manes. Almost all male lions in Pendjari National Park are either maneless or have very short manes. Maneless lions have also been reported in Senegal, in Sudan 's Dinder National Park and in Tsavo East National Park , Kenya. Castrated lions often have little to no mane because

3400-470: Is an apex and keystone predator ; although some lions scavenge when opportunities occur and have been known to hunt humans , lions typically do not actively seek out and prey on humans. The lion inhabits grasslands , savannahs , and shrublands . It is usually more diurnal than other wild cats, but when persecuted, it adapts to being active at night and at twilight . During the Neolithic period,

3500-399: Is generally mutual and the recipient appears to express pleasure. The head and neck are the most common parts of the body licked; this behaviour may have arisen out of utility because lions cannot lick these areas themselves. Lions have an array of facial expressions and body postures that serve as visual gestures. A common facial expression is the "grimace face" or flehmen response , which

3600-533: Is no evidence for gene flow between the two lineages, indicating that they did not share the same geographic area. The Eurasian and American cave lions became extinct at the end of the last glacial period without mitochondrial descendants on other continents. The modern lion was probably widely distributed in Africa during the Middle Pleistocene and started to diverge in sub-Saharan Africa during

3700-415: Is short and powerful; it attempts to catch prey with a fast rush and final leap, usually pulls it down by the rump, and kills with a clamping bite to the throat or muzzle . It can hold the prey's throat for up to 13 minutes, until the prey stops moving. It has a bite force from 1593.8 to 1768 Newtons at the canine tip and up 4167.6 Newtons at the carnassial notch. Lions typically consume prey at

3800-590: Is the Tsavo lion pride that always has just one adult male. Prides act as fission–fusion societies , and members will split into subgroups that keep in contact with roars . Nomadic lions range widely and move around sporadically, either in pairs or alone. Pairs are more frequent among related males. A lion may switch lifestyles; nomads can become residents and vice versa. Interactions between prides and nomads tend to be hostile, although pride females in estrus allow nomadic males to approach them. Males spend years in

3900-615: Is the most social of all wild felid species, living in groups of related individuals with their offspring. Such a group is called a " pride ". Groups of male lions are called "coalitions". Females form the stable social unit in a pride and do not tolerate outside females. The majority of females remain in their birth prides while all males and some females will disperse . The average pride consists of around 15 lions, including several adult females and up to four males and their cubs of both sexes. Large prides, consisting of up to 30 individuals, have been observed. The sole exception to this pattern

4000-480: Is typically brownish and tinged with yellow, rust, and black hairs. Mutations in the genes microphthalmia-associated transcription factor and tyrosinase are possibly responsible for the colour of manes. It starts growing when lions enter adolescence, when testosterone levels increase, and reach their full size at around four years old. Cool ambient temperatures in European and North American zoos may result in

4100-426: Is unable to consume all of the kill, it rests for a few hours before continuing to eat. On hot days, the pride retreats to shade with one or two males standing guard. Lions defend their kills from scavengers such as vultures and hyenas. Lions scavenge on carrion when the opportunity arises, scavenging animals dead from natural causes such as disease or those that were killed by other predators. Scavenging lions keep

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4200-548: The Alpha chapter , Agnes Chapman, is given credit for the actual design of the coat of arms. Symbolism from the ritual and the Alpha pin were combined in the coat of arms, and the design originally had a background of violets. In 1919, the convention body voted to make changes and the present design was accepted. The Adelphean is a quarterly magazine covering recent events, upcoming activities, outstanding members, and chapter news. It

4300-591: The Beta chapter was established at Salem College in Winston-Salem, North Carolina, by two members of the Alpha chapter . The chapter had seven members and fifteen new initiates until the administration abolished sororities three years later. In 1906 its Gamma chapter was founded at Mary Baldwin Seminary . Visitors were not allowed at the school, so the chapter charter and special instructions were delivered to

4400-512: The Narmada River in central India. Lions spend much of their time resting; they are inactive for about twenty hours per day. Although lions can be active at any time, their activity generally peaks after dusk with a period of socialising, grooming, and defecating. Intermittent bursts of activity continue until dawn, when hunting most often takes place. They spend an average of two hours a day walking and fifty minutes eating. The lion

4500-484: The Nile Basin during the early Holocene . In zoos, lions have been bred with tigers to create hybrids for the curiosity of visitors or for scientific purpose. The liger is bigger than a lion and a tiger, whereas most tigons are relatively small compared to their parents because of reciprocal gene effects. The leopon is a hybrid between a lion and leopard. The lion is a muscular, broad-chested cat with

4600-469: The 1940s many teachers' colleges had begun to add liberal arts programs, and vice versa, which led to difficulties in the organizations functioning separately. On November 12, 1947, at a conference in Colorado Springs, Colorado , the NPC considered and granted associate membership "with reservations" to the six AES sororities. The AES was holding its biennial meeting when it was notified of

4700-631: The 2010s, sorority members and outside observers noticed a shift in sorority culture; though sororities began as feminist organizations, emphasis during the mid-1900s on social reputations and exclusionary recruitment policies (such as a refusal to recruit Jewish and African-American women) led to a reputation for following cultural hegemony and being made up of upper-class white women. Though such issues continue to persist in various ways, sorority and anti-sorority women alike observed sororities becoming more ethnically diverse and moving away from traditional power structures towards their feminist roots. In

4800-519: The 2010s, sorority members began attempts to change how sororities work from within. In November 2015, eight NPC members ( Alpha Phi , Alpha Chi Omega , Phi Mu , Alpha Gamma Delta , Sigma Delta Tau , Delta Phi Epsilon , Delta Gamma , and Gamma Phi Beta ) broke ranks from the NPC to withdraw their support for the Safe Campus Act , a controversial bill that would have required campus sexual assault victims to report to police and submit to

4900-606: The AES, NPC, and Professional Panhellenic Association as members. Members of Sigma Sigma Sigma and Alpha Sigma Alpha organized the Association of Pedagogical Sororities on July 10, 1915. Its members were primarily sororities located on state campuses mainly attended by women entering the educational field. In 1917, Pi Kappa Sigma and Delta Sigma Epsilon joined the association, followed by Theta Sigma Upsilon in 1925, Alpha Sigma Tau in 1926, and Pi Delta Theta in 1931. At

5000-775: The Asiatic lion population. In 2017, the Cat Classification Task Force of the Cat Specialist Group revised lion taxonomy , and recognises two subspecies based on results of several phylogeographic studies on lion evolution , namely: However, there seems to be some degree of overlap between both groups in northern Central Africa. DNA analysis from a more recent study indicates that Central African lions are derived from both northern and southern lions, as they cluster with P. leo leo in mtDNA-based phylogenies whereas their genomic DNA indicates

5100-629: The Late Pleistocene. Lion populations in East and Southern Africa became separated from populations in West and North Africa when the equatorial rainforest expanded 183,500 to 81,800 years ago. They shared a common ancestor probably between 98,000 and 52,000 years ago. Due to the expansion of the Sahara between 83,100 and 26,600 years ago, lion populations in West and North Africa became separated. As

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5200-452: The NPC created a gender identity study group to examine potential legal consequences, they concluded that the legal precedents were "incomplete, inconclusive, and inconsistent," and did not enact official policy or recommendations. By 2021, most national organizations had released political statements on racial and social equity and inclusion, while also developing membership policies regarding gender identity. Delta Phi Epsilon developed

5300-495: The NPC decision and, at that meeting, "completed the necessary business and took formal action to dissolve the Association". The NPC admitted five other sororities at the same time: Alpha Epsilon Phi , Delta Phi Epsilon , Phi Sigma Sigma , Sigma Delta Tau , and Theta Phi Alpha . In December 1951, all 11 of these sororities became full NPC members. Since that time, three AES members have merged with other NPC groups, leaving Alpha Sigma Alpha, Alpha Sigma Tau, and Sigma Sigma Sigma as

5400-403: The NPC's relationship with it. The basic positions at each institution are President, VP of Communications, VP of Finance, VP of Philanthropy and Community Service, VP of Programming, VP of Recruitment, VP of Scholarship, and VP of Judicial. The number of positions is based on the number of NPC sororities at each institution. Along with the delegates each being a representative from their sorority,

5500-566: The Ngorongoro Crater were afflicted by an outbreak of stable fly ( Stomoxys calcitrans ) in 1962, resulting in lions becoming emaciated and covered in bloody, bare patches. Lions sought unsuccessfully to evade the biting flies by climbing trees or crawling into hyena burrows; many died or migrated and the local population dropped from 70 to 15 individuals. A more recent outbreak in 2001 killed six lions. Captive lions have been infected with canine distemper virus (CDV) since at least

5600-612: The US and Canada. National Panhellenic Conference The National Panhellenic Conference ( NPC ) is an umbrella organization for 26 national and international women's sororities throughout the United States and Canada . Panhellenic ( lit.   ' all-Greek ' ) refers to the group's members being autonomous social Greek-letter societies of college women and alumnae . The National Panhellenic Conference provides guidelines and resources for its members and serves as

5700-697: The adjacent Timbavati Private Game Reserve in eastern South Africa. They were removed from the wild in the 1970s, thus decreasing the white lion gene pool . Nevertheless, 17 births have been recorded in five prides between 2007 and 2015. White lions are selected for breeding in captivity. They have reportedly been bred in camps in South Africa for use as trophies to be killed during canned hunts . African lions live in scattered populations across sub-Saharan Africa. The lion prefers grassy plains and savannahs , scrub bordering rivers, and open woodlands with bushes. It rarely enters closed forests. On Mount Elgon ,

5800-424: The age of two. When a new male lion takes over a pride, adolescents both male and female may be evicted. Lions may live 12–17 years in the wild. Although adult lions have no natural predators, evidence suggests most die violently from attacks by humans or other lions. Lions often inflict serious injuries on members of other prides they encounter in territorial disputes or members of the home pride when fighting at

5900-544: The animal's expressive movements are highly developed. The most common peaceful, tactile gestures are head rubbing and social licking , which have been compared with the role of allogrooming among primates. Head rubbing, nuzzling the forehead, face and neck against another lion appears to be a form of greeting and is seen often after an animal has been apart from others or after a fight or confrontation. Males tend to rub other males, while cubs and females rub females. Social licking often occurs in tandem with head rubbing; it

6000-499: The attack. They take advantage of factors that reduce visibility; many kills take place near some form of cover or at night. One study in 2018 recorded a lion running at a top speed of 74.1 km/h (46.0 mph). The lion accelerates at the start of the chase by 9.5 m/s² , whereas zebras, wildebeest and Thomson's gazelle accelerate by 5 m/s², 5.6 m/s² and 4.5 m/s², respectively; acceleration appears to be more important than steady displacement speed in lion hunts. The lion's attack

6100-460: The cause of the decline is not fully understood, habitat loss and conflicts with humans are the greatest causes for concern. One of the most widely recognised animal symbols in human culture, the lion has been extensively depicted in sculptures and paintings, on national flags, and in literature and films. Lions have been kept in menageries since the time of the Roman Empire and have been

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6200-411: The cubs varies—one male could patiently let the cubs play with his tail or his mane, while another may snarl and bat the cubs away. Pride lionesses often synchronise their reproductive cycles and communal rearing and suckling of the young, which suckle indiscriminately from any or all of the nursing females in the pride. The synchronisation of births is advantageous because the cubs grow to being roughly

6300-539: The executive board includes a member from each sorority as well. Throughout its history the NPC Executive Board has been led by a chairman . In 2018 the NPC Board of Directors voted to change its governance model. As of 2021, members rotate onto the board in the order their organization joined the NPC, but the chairman is now elected. Lion The lion ( Panthera leo ) is a large cat of

6400-489: The formation of group-specific sororities which attempted to provide the same social and academic outlets to groups who were otherwise excluded from membership. These groups included the first Black Greek letter organizations . By 1922, the NPC (at the time named the National Panhellenic Congress) had an executive committee consisting of a chairman, secretary, and treasurer; a publicity board; and

6500-512: The genus Panthera , native to Africa and India . It has a muscular, broad-chested body ; a short, rounded head; round ears; and a dark, hairy tuft at the tip of its tail. It is sexually dimorphic ; adult male lions are larger than females and have a prominent mane. It is a social species , forming groups called prides. A lion's pride consists of a few adult males, related females, and cubs. Groups of female lions usually hunt together, preying mostly on medium-sized and large ungulates . The lion

6600-534: The group. Alternatively, there may be rewards associated with being a leader that fends off intruders; the rank of lionesses in the pride is reflected in these responses. The male or males associated with the pride must defend their relationship with the pride from outside males who may attempt to usurp them. Dominance hierarchies do not appear to exist among individuals of either sex in a pride. Asiatic lion prides differ in group composition. Male Asiatic lions are solitary or associate with up to three males, forming

6700-570: The hunting of large, slower-moving prey like buffalo; and even hunt them on their own. Moderately-sized hunting groups generally have higher success rates than lone females and larger groups. Lions are not particularly known for their stamina. For instance, a lioness's heart comprises only 0.57% of her body weight and a male's is about 0.45% of his body weight, whereas a hyena's heart comprises almost 1% of its body weight. Thus, lions run quickly only in short bursts at about 48–59 km/h (30–37 mph) and need to be close to their prey before starting

6800-431: The impetus of the discovery of a pre-existing men's fraternity using those exact letters and which pre-dated the original Adelphean Society's inception by almost 20 years. There seems to be little to no speculation as to why "Pi" was specifically chosen as a replacement letter, and or why it took so long to hear of the pre-existing ADPhi Fraternity . Thus in 1913, the Adelphean Society, through Convention legislation, changed

6900-722: The lion has been recorded up to an elevation of 3,600 m (11,800 ft) and close to the snow line on Mount Kenya . Savannahs with an annual rainfall of 300 to 1,500 mm (12 to 59 in) make up the majority of lion habitat in Africa, estimated at 3,390,821 km (1,309,203 sq mi) at most, but remnant populations are also present in tropical moist forests in West Africa and montane forests in East Africa. The Asiatic lion now survives only in and around Gir National Park in Gujarat, western India. Its habitat

7000-810: The lion population in Kenya's Masai Mara National Reserve declined, the spotted hyena population increased rapidly. Lions tend to dominate cheetahs and leopards, steal their kills and kill their cubs and even adults when given the chance. Cheetahs often lose their kills to lions or other predators. A study in the Serengeti ecosystem revealed that lions killed at least 17 of 125 cheetah cubs born between 1987 and 1990. Cheetahs avoid their competitors by hunting at different times and habitats. Leopards, by contrast, do not appear to be motivated by an avoidance of lions, as they use heavy vegetation regardless of whether lions are present in an area and both cats are active around

7100-544: The lion ranged throughout Africa and Eurasia, from Southeast Europe to India, but it has been reduced to fragmented populations in sub-Saharan Africa and one population in western India . It has been listed as Vulnerable on the IUCN Red List since 1996 because populations in African countries have declined by about 43% since the early 1990s. Lion populations are untenable outside designated protected areas. Although

7200-551: The location of the hunt but sometimes drag large prey into cover. They tend to squabble over kills, particularly the males. Cubs suffer most when food is scarce but otherwise all pride members eat their fill, including old and crippled lions, which can live on leftovers. Large kills are shared more widely among pride members. An adult lioness requires an average of about 5 kg (11 lb) of meat per day while males require about 7 kg (15 lb). Lions gorge themselves and eat up to 30 kg (66 lb) in one session. If it

7300-491: The mid-1970s. CDV is spread by domestic dogs and other carnivores; a 1994 outbreak in Serengeti National Park resulted in many lions developing neurological symptoms such as seizures. During the outbreak, several lions died from pneumonia and encephalitis . Feline immunodeficiency virus and lentivirus also affect captive lions. When resting, lion socialisation occurs through a number of behaviours;

7400-514: The name of the organization, adopted a recognition pin, and appointed a standardization committee. The trustees at Wesleyan Female College voted to abolish sororities, leading to the closure of Alpha chapter in 1915. Chi chapter , at Wittenberg University , was the first chapter to bear the new name at installation. In 1948, Mrs. Carolee Strock Stanard retired as Grand President and part of her keynote address became The Creed of Alpha Delta Pi . In 1960, Alpha Delta Pi's 100th chapter, Delta Omicron ,

7500-744: The new group by mail. In 1906, Jewel Davis entered the University of Texas at Austin as a graduate student, organized a group, and installed them as Delta chapter , the fourth chapter of Alpha Delta Phi. Jewel Davis is listed as a charter member as there was no precedent for affiliation. Today, the Delta chapter at The University of Texas at Austin is the oldest surviving chapter of Alpha Delta Pi. Between 1906 and 1912, eight more chapters were founded at various universities. In 1913, Alpha Delta Phi officially changed its name to Alpha Delta Pi . The deliberations over this change remain largely unknown aside from

7600-459: The next decade, with Alpha Xi Delta in 1904, Alpha Omicron Pi and Sigma Kappa in 1905, Alpha Delta Pi and Alpha Gamma Delta and Zeta Tau Alpha in 1909, Delta Zeta in 1910, Phi Mu in 1911, and Kappa Delta in 1912. No new members were admitted for the next few decades. Throughout its early years, NPC members were often racially and religiously segregated and rarely admitted Jewish , Catholic , or ethnic minority members, which led to

7700-533: The nickname of Alphie. Alpha Delta Pi currently has 161 chapters in the United States and Canada , with the majority concentrated in the southern United States, and over 150 alumnae associations. Its national philanthropy is the Ronald McDonald House Charities. Elizabeth Moseley Coles, who was elected national president at the first grand convention, was responsible for having Alpha Delta Pi's coat of arms designed. Another sister of

7800-434: The phylogenetic relationship of the lion; it was thought to form a sister group with the jaguar that diverged 3.46 to 1.22 million years ago , but also with the leopard that diverged 3.1 to 1.95 million years ago to 4.32 to 0.02 million years ago . Hybridisation between lion and snow leopard ancestors possibly continued until about 2.1 million years ago. The lion-leopard clade

7900-612: The previous males associated with a pride, the victors often kill any existing young cubs , perhaps because females do not become fertile and receptive until their cubs mature or die. Females often fiercely defend their cubs from a usurping male but are rarely successful unless a group of three or four mothers within a pride join forces against the male. Cubs also die from starvation and abandonment, and predation by leopards, hyenas and wild dogs. Male cubs are excluded from their maternal pride when they reach maturity at around two or three years of age, while some females may leave when they reach

8000-589: The rainforest decreased and thus gave rise to more open habitats, lions moved from West to Central Africa. Lions from North Africa dispersed to southern Europe and Asia between 38,800 and 8,300 years ago. Extinction of lions in southern Europe, North Africa and the Middle East interrupted gene flow between lion populations in Asia and Africa. Genetic evidence revealed numerous mutations in lion samples from East and Southern Africa, which indicates that this group has

8100-457: The range of the now extinct cave lion . In Hungary , the modern lion was present from about 4,500 to 3,200 years Before Present . In Ukraine , the modern lion was present from about 6,400 to 2,000 years Before Present. In Greece, it was common, as reported by Herodotus in 480 BC; it was considered rare by 300 BC and extirpated by AD 100. In Asia the lion once ranged in regions where climatic conditions supported an abundance of prey. It

8200-548: The remaining former AES members. From the 1940s to the 1960s, various smaller organizations merged into larger ones. On some campuses with two different chapters from merged sororities, a third sorority would organize on the campus to absorb the smaller sorority's former chapter. By the end of the 1960s and the civil rights movement , NPC sororities eliminated official policies that prevented minority members from joining, although diversity in Greek life remained an issue. As of

8300-488: The removal of the gonads inhibits testosterone production. Rarely, both wild and captive lionesses have manes. Increased testosterone may be the cause of maned lionesses reported in northern Botswana. The white lion is a rare morph with a genetic condition called leucism , which is caused by a double recessive allele . It is not albino; it has normal pigmentation in the eyes and skin. White lions have occasionally been encountered in and around Kruger National Park and

8400-429: The same area. The evolution of sociability in lions was likely driven both by high population density and the clumped resources of savannah habitats. The larger the pride, the more high-quality territory they can defend; "hotspots" being near river confluences , where the cats have better access to water, prey and shelter (via vegetation). The area occupied by a pride is called a "pride area" whereas that occupied by

8500-420: The same size and have an equal chance of survival, and sucklings are not dominated by older cubs. Weaning occurs after six or seven months. Male lions reach maturity at about three years of age and at four to five years are capable of challenging and displacing adult males associated with another pride. They begin to age and weaken at between 10 and 15 years of age at the latest. When one or more new males oust

8600-406: The same time of day. In addition, there is no evidence that lions affect leopard abundance. Leopards take refuge in trees, though lionesses occasionally attempt to climb up and retrieve their kills. Lions similarly dominate African wild dogs , taking their kills and dispatching pups or adult dogs. Population densities of wild dogs are low in areas where lions are more abundant. However, there are

8700-420: The same time. When first introduced to the rest of the pride, lion cubs lack confidence when confronted with adults other than their mother. They soon begin to immerse themselves in the pride life, however, playing among themselves or attempting to initiate play with the adults. Lionesses with cubs of their own are more likely to be tolerant of another lioness's cubs than lionesses without cubs. Male tolerance of

8800-425: The session resulted in the organization of the first interfraternity association and the first intergroup organization on college campuses. The first few meetings resulted in several mutual agreements, especially regarding pledging. Up to this time, no guidelines had been set, and women could be pledged to groups before enrolling in college and belong to more than one group. Many of the current members joined through

8900-462: The sorority states it looks for in its members. The official flower is the woodland violet ; however since woodland violets are found in the wild and not available for purchase, people often substitute the African violet . The official jewel and symbol is the diamond , which the sorority uses as a symbol of "the enduring strength and value of friendship". The mascot for Alpha Delta Pi is a lion with

9000-422: The spur are unknown. The tuft is absent at birth and develops at around 5 + 1 ⁄ 2 months of age. It is readily identifiable at the age of seven months. Its skull is very similar to that of the tiger, although the frontal region is usually more depressed and flattened and has a slightly shorter postorbital region and broader nasal openings than those of the tiger. Due to the amount of skull variation in

9100-466: The third biennial conference, the name of the association was changed to the Association of Educational Sororities. Later, the word Educational was changed to Education . From 1915 through 1926, the NPC and AES operated chapters in the same colleges and universities. In 1926, the NPC and AES made an agreement "defining fields of activities of each panhellenic". There was competition between NPC and AES sororities, and dual memberships were often held. By

9200-413: The tiger in size. The size and weight of adult lions vary across its range and habitats. Accounts of a few individuals that were larger than average exist from Africa and India. The male lion's mane is the most recognisable feature of the species. It may have evolved around 320,000–190,000 years ago. It grows downwards and backwards, covering most of the head, neck, shoulders, and chest. The mane

9300-407: The two species, usually only the structure of the lower jaw can be used as a reliable indicator of species. The skeletal muscles of the lion make up 58.8% of its body weight and represent the highest percentage of muscles among mammals. The lion has a high concentration of fast twitch muscle fibers, giving them quick bursts of speed but less stamina. Among felids, the lion is second only to

9400-400: Was a borrowing from Ancient Greek λέων léōn . The Hebrew word לָבִיא lavi may also be related. The generic name Panthera is traceable to the classical Latin word 'panthēra' and the ancient Greek word πάνθηρ 'panther'. Felis leo was the scientific name used by Carl Linnaeus in 1758, who described the lion in his work Systema Naturae . The genus name Panthera

9500-593: Was coined by Lorenz Oken in 1816. Between the mid-18th and mid-20th centuries, 26 lion specimens were described and proposed as subspecies, of which 11 were recognised as valid in 2005. They were distinguished mostly by the size and colour of their manes and skins. In the 19th and 20th centuries, several lion type specimens were described and proposed as subspecies , with about a dozen recognised as valid taxa until 2017. Between 2008 and 2016, IUCN Red List assessors used only two subspecific names: P. l. leo for African lion populations, and P. l. persica for

9600-520: Was distributed in the Asian and African Palearctic since at least the early Pliocene . The earliest fossils recognisable as lions were found at Olduvai Gorge in Tanzania and are estimated to be up to 2 million years old. Estimates for the divergence time of the modern and cave lion lineages range from 529,000 to 392,000 years ago based on mutation rate per generation time of the modern lion. There

9700-586: Was installed at East Carolina University . In 1979, Alpha Delta Pi adopted Ronald McDonald Houses as the National Philanthropy. In 1983, Alpha Delta Pi Foundation was established. In 2001, Alpha Delta Pi celebrated its 150th anniversary in Atlanta, Georgia, and in 2006, the Delta chapter , the oldest open chapter of ADPi, celebrated its 100th anniversary at The University of Texas at Austin. In 2009, Theta Theta chapter at Quinnipiac University

9800-441: Was installed. Theta Theta was the 200th chapter of ADPi to be installed. Chapters continue to be installed and anniversaries are celebrated at numerous university campuses. The open motto of ADPi is "We Live for Each Other," and its colors are azure blue and white. To the sorority, blue is symbolic of friendship, which the sorority cites as one of its founding values; white symbolizes sincerity and truth, which are two qualities

9900-951: Was present in the Caucasus until the 10th century. It lived in Palestine until the Middle Ages and in Southwest Asia until the late 19th century. By the late 19th century, it had been extirpated in most of Turkey. The last live lion in Iran was sighted in 1942, about 65 km (40 mi) northwest of Dezful , although the corpse of a lioness was found on the banks of the Karun river in Khuzestan province in 1944. It once ranged from Sind and Punjab in Pakistan to Bengal and

10000-414: Was still referred to as "Alpha Delta Phi." Since 1979, Alpha Delta Pi has been committed to serving Ronald McDonald House Charities (RMHC). Throughout their partnership, Alpha Delta Pi has contributed more than $ 16 million to RHMC. Local RMHC Chapters operate Ronald McDonald House, Ronald McDonald Care Mobile, and Ronald McDonald Family Room programs in local communities. Alpha Delta Pi has 161 chapters in

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