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Though fairly approachable while feeding, the pelicans may temporarily abandon their nests if a human closely approaches the colony. If the threat is another bird, however, the pelicans do not abandon the nest and may fight off the interloper by jabbing at them with their considerable bills. [27] Full-grown pelicans have few predators.
The great white pelican is a huge bird—only the Dalmatian pelican is, on average, larger among pelicans. It measures 140 to 180 cm (55 to 71 in) in length [ 6 ] with a 28.9 to 47.1 cm (11.4 to 18.5 in) enormous pink and yellow bill , [ 6 ] and a dull pale-yellow gular pouch.
The pelicans have enjoyed a tremendous rebound from the 50 or so individuals that existed in the region when first counted in 1908. [1] Tending to nest on two large islands within the lake for protection from predators, Chase Lake is an alkaline lake and supports few fish species, so the pelicans rely on the plentiful tiger salamander as a food ...
For example, in Africa, the pink-backed pelican generally takes fish ranging in size from fry up to 400 g (0.9 lb) and the great white pelican prefers somewhat larger fish, up to 600 g (1.3 lb), but in Europe, the latter species has been recorded taking fish up to 1,850 g (4.1 lb). [71] In deep water, white pelicans often fish alone.
Gunnison Island is located in the northwest quadrant of the Great Salt Lake in Box Elder County, Utah, United States, approximately 55 miles (89 km) northwest of Salt Lake City and about 6 miles (9.7 km) east from the lake's western shore, and is best known as an important rookery for the American white pelican (Pelecanus erythrorhynchos).
Pelicans are very large water birds with a distinctive pouch under their beak. Like other birds in the order Pelecaniformes, they have four webbed toes. American white pelican, Pelecanus erythrorhynchos; Brown pelican, Pelecanus occidentalis
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The brown pelican is readily distinguished from the American white pelican by ... winter. [30] In the non-breeding season, ... the nest early in the breeding season.