The great white pelican, known scientifically as Pelecanus onocrotalus, is a gargantuan bird, surpassed in size only by its cousin, the Dalmatian pelican. With a body length ranging from 140 to 180 cm and a wingspan stretching from 226 to 360 cm, it is one of the largest flying birds. The pelican's bill is an impressive 28.9 to 47.1 cm long, colored in hues of pink and yellow, and is accompanied by a pale-yellow gular pouch. Males are generally larger than females and exhibit a pronounced sexual dimorphism, with males averaging more than 30% heavier than females.
Adult great white pelicans are predominantly white with black flight feathers and a faint pink tinge on the neck. The bill is bluish-grey with a red tip and a yellowish gular pouch. During the breeding season, males display pinkish facial skin, while females exhibit a more orangey hue. Juveniles are distinguishable by their darker, brownish underparts and patterned underwings.
These pelicans favor shallow, warm freshwater environments, such as lakes, swamps, and lagoons, often with dense reed beds nearby for nesting. They are also found in coastal estuarine areas and occasionally at elevations up to 1,372 m in East Africa and Nepal.
