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The North American Waterfowl Management Plan for redheads is 760,000 North American birds. [13] The population size has increased in the past few decades to well over 1.4 million birds. [ 6 ] Redheads make up 2% of North America's duck population and only 1% of its harvested ducks. [ 13 ]
The red-crested cardinal is a medium-sized species showing a red head, with a red bib and a short red crest that the bird raises when excited. Belly, breast, and undertail are white, with a gray back, wings, and tail. Wing coverts are gray, but the primaries, secondaries, and rectrices show a darker gray.
It is further subservient to large hawks such as red-tailed hawks, Harris's hawks and Buteogallus black hawks, as well as to large falcons like peregrine falcons and crested caracaras, despite most of these birds being rather smaller in body size than a turkey vulture. Often these raptors tend to engage in dive-bombing or other intimidation ...
The northern cardinal (Cardinalis cardinalis), known colloquially as the common cardinal, red cardinal, or just cardinal, is a bird in the genus Cardinalis.It can be found in southeastern Canada, through the eastern United States from Maine to Minnesota to Texas, New Mexico, southern Arizona, southern California and south through Mexico, Belize, and Guatemala.
The northern flicker or common flicker (Colaptes auratus) is a medium-sized bird of the woodpecker family. It is native to most of North America, parts of Central America, Cuba, and the Cayman Islands, and is one of the few woodpecker species that migrate.
The red-headed vulture (Sarcogyps calvus), also known as the Asian king vulture, Indian black vulture or Pondicherry vulture, [2] is an Old World vulture mainly found in the Indian subcontinent, with small disjunct populations in some parts of Southeast Asia.
It is a large bird with black feathers and a red head. Its total length is about 60–75 cm (23.5–29.5 in) and a wingspan of about 85 cm (33 in). The subspecies A. l. purpureicollis from the northern Cape York Peninsula is smaller than the more widespread nominate subspecies.
The largest dimensions found in this species are an approximate head-to-tail length of 1.44 m (4.7 ft) and a wingspan of 3.65 m (12.0 ft). The largest bird of all time was likely the elephant bird Aepyornis maximus, which was estimated to have weighed 275–1,000 kilograms (610–2,200 lb) and stood at 3 metres (9.8 ft) tall. [4] [5]