14-720: Great Owl can refer to: several species of owl the North African pharaoh eagle-owl (particularly in ancient or antiquarian texts) the great grey owl the American great horned owl Wielka Sowa , the highest peak in the Owl Mountains, Poland The Great Owl, a character in The Secret of NIMH Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
28-491: A result. Wadis tend to be associated with centers of human population because sub-surface water is sometimes available in them. Nomadic and pastoral desert peoples will rely on seasonal vegetation found in wadis, even in regions as dry as the Sahara , as they travel in complex transhumance routes. The centrality of wadis to water – and human life – in desert environments gave birth to the distinct sub-field of wadi hydrology in
42-837: A wet ( ephemeral ) riverbed that contains water only when heavy rain occurs. Arroyo ( Spanish ) is used in the Americas for similar landforms. The term wādī is very widely found in Arabic toponyms . Some Spanish toponyms are derived from Andalusian Arabic where wādī was used to mean a permanent river, for example: Guadalcanal from wādī al-qanāl ( Arabic : وَادِي الْقَنَال , "river of refreshment stalls"), Guadalajara from wādī al-ḥijārah ( Arabic : وَادِي الْحِجَارَة , "river of stones"), or Guadalquivir , from al-wādī al-kabīr ( Arabic : اَلْوَادِي الْكَبِير , "the great river"). Wadis are located on gently sloping, nearly flat parts of deserts; commonly they begin on
56-709: A wide range of sedimentary structures, including ripples and common plane beds. Gravels commonly display imbrications , and mud drapes show desiccation cracks. Wind activity also generates sedimentary structures, including large-scale cross-stratification and wedge-shaped cross-sets. A typical wadi sequence consists of alternating units of wind and water sediments; each unit ranging from about 10–30 cm (4–12 in). Sediment laid by water shows complete fining upward sequence. Gravels show imbrication. Wind deposits are cross-stratified and covered with mud-cracked deposits. Some horizontal loess may also be present. Modern English usage differentiates wadis from canyons or washes by
70-441: Is monogamous and forms a lifelong relationship. Breeding takes place in late winter; the nest is a scrape in a crevice or among rocks. Two eggs are laid and incubated by the female for about 31 days. Both parents feed the chicks and leave the nest at about 20 to 35 days old, but remain reliant on their parents for several more months. The Pharaoh eagle-owl has a very large range and is reported as being abundant in at least part of
84-431: Is a Middle Eastern and North African species of owl in the family Strigidae . The Pharaoh eagle-owl has a mottled plumage and large orange-yellow eyes. The head and upperparts are tawny and densely marked with black and creamy-white streaks and blotches, while the underparts are pale creamy-white, with black streaks on the upper breast and fine reddish-brown vermiculations on the lower breast and belly. The face has
98-738: Is native to much of arid Northern Africa, including some of the most desolate parts of the central Saharan Desert , where it may be found in Algeria , Chad , Egypt , Eritrea , Libya , Mali , Mauritania , Morocco , Niger , Senegal ( vagrant owls), Sudan , Tunisia and Western Sahara . Its range extends eastward into the Arabian Peninsula and the Middle East, where it is found in Iran , Iraq , Israel , Jordan , Kuwait , Oman , Palestine , Qatar , Saudi Arabia , Syria and
112-839: The United Arab Emirates . Its preferred habitat is mostly open, barren plains or desert with scattered palms or other endemic plants, where it nests in rocky outcrops, wadis and cliffs. The Pharaoh eagle-owl is nocturnal and emerges at dusk to hunt over an area of about 5 km (1.9 sq mi). It perches on an eminence and watches and listens to detect moving prey before swooping down on its victim. It will feed on any small creatures it can find, but rodents, especially gerbils are favored prey. Other mammals such as bats, desert foxes, and hares are also taken, as well as small birds, snakes, lizards, beetles, and scorpions. They occasionally prey on other birds of prey such as barn owls, little owls, and common kestrels. This owl
126-425: The action and prevalence of water. Wadis, as drainage courses, are formed by water, but are distinguished from river valleys or gullies in that surface water is intermittent or ephemeral. Wadis are generally dry year round, except after a rain. The desert environment is characterized by sudden but infrequent heavy rainfall, often resulting in flash floods . Crossing wadis at certain times of the year can be dangerous as
140-536: The disc-like form typical of most owls, defined by a dark rim, the robust bill is black and hooked, and the head is crowned with small ear tufts. With a body length of 46–50 cm (18–20 in), it is one of the smaller eagle-owl species. There are two recognised subspecies of the Pharaoh eagle-owl, the Pharaoh eagle-owl ( B. a. ascalaphus ) and the desert eagle-owl ( B. a. desertorum ), the latter being smaller and paler with sandier colouration. The Pharaoh eagle-owl
154-504: The distal portions of alluvial fans and extend to inland sabkhas or dry lakes . In basin and range topography , wadis trend along basin axes at the terminus of fans. Permanent channels do not exist, due to lack of continual water flow. They have braided stream patterns because of the deficiency of water and the abundance of sediments . Water percolates down into the stream bed, causing an abrupt loss of energy and resulting in vast deposition. Wadis may develop dams of sediment that change
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#1732782944425168-499: The range. It faces no particular threats, and is therefore listed as Least Concern on the IUCN Red List . Wadi Wadi ( Arabic : وَادِي , romanized : wādī , alternatively wād ; Arabic : وَاد , Maghrebi Arabic oued , Hebrew : וָאדִי , romanized : vadi , lit. 'wadi') is the Arabic term traditionally referring to a river valley . In some instances, it may refer to
182-485: The stream patterns in the next flash flood . Wind also causes sediment deposition. When wadi sediments are underwater or moist, wind sediments are deposited over them. Thus, wadi sediments contain both wind and water sediments. Wadi sediments may contain a range of material, from gravel to mud, and the sedimentary structures vary widely. Thus, wadi sediments are the most diverse of all desert environments. Flash floods result from severe energy conditions and can result in
196-544: The title Great Owl . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Great_Owl&oldid=866159624 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Animal common name disambiguation pages Pharaoh eagle-owl The Pharaoh eagle-owl ( Bubo ascalaphus )
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