Friday, January 10, 2014

african animals of brown pelican cranes gallery

The Brown Pelican (Pelecanus occidentalis) is a small pelican found in the Americas. It is one of the best known and most prominent birds found in the coastal areas of the southern and western United States. It is one of only 3 pelican species found in the Western Hemisphere. This is one of the only two pelican species which feeds by diving into the water.These birds are the smallest of the eight species of pelican, although it is a large bird in nearly every other regard. It is 106–137 cm (42–54 in) in length, weighs from 2.75 to 5.5 kg (6.1 to 12 lb) and has a wingspan from 1.83 to 2.5 m (6.0 to 8.2 ft). Through most of its range, the brown pelican is an unmistakable bird. Like all pelicans, this species has a very large bill, 28 to 34.8 cm (11 to 13.7 in) long in this case, with a gular pouch on the bottom for draining water when it scoops out prey. The head is white but often gets a yellowish wash in adult birds. The bill is grayish overall in most birds, though breeding birds become reddish on the underside of the throat. The back, rump, and tail are streaked with gray and dark brown, sometimes with a rusty hue. In adult pelicans, the breast and belly are a blackish-brown and the legs and feet are black. The juvenile is similar but has a brownish-gray neck and white underparts.

These birds nest in colonies, often on islands and/or in mangroves. Male pelicans pick out the nesting sites and perform an "advertising" display which attracts the females. Once a pair forms a bond, overt communication between them is minimal. Pelican nesting peaks during March and April; nests are in colonies either in trees, bushes, or on the ground (the latter usually on islands that terrestrial predators cannot access). Those placed in trees are rather flimsy and made of reeds, grasses, straw, and sticks; if on the ground, nests consist of a shallow scrape lined with feathers and a rim of soil built 10–26 cm (3.9–10 in) above the ground. Their young are hatched in broods of about 2–3 and are naked and helpless upon hatching. Incubation is roughly 28–30 days. Both parents actively care for the young. Young pelicans start to walk independently at about 35 days old in ground nest, but do not leave treetop nests for up to 68–88 days. In the 8–10 month period they are cared for, the nestling pelicans are fed by regurgitation around 70 kg (150 lb) of fish.The younger birds reach sexual maturity (and full adult plumage) at anywhere from two to five years of age. Predation is occasional at colonies and predators of eggs, young and the rare adult pelicans can include gulls, raptors (especially bald eagles), foxes, skunks and feral cats. In areas where their ranges' overlap, American alligators may sometimes pick off fledging pelicans. Predation is likely reduced if the colony is on an island. Like all pelicans, Brown Pelicans are highly sensitive to disturbances by humans (often tourists or fishermen) at their nest and may abandon their nest if stressed as such.[4] Due to their size, the non-nesting adults are rarely predated.for cute pics.....

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