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The California condor (Gymnogyps californianus) is a New World vulture and the largest North American land bird. It became extinct in the wild in 1987 when all remaining wild individuals were captured, but has since been reintroduced to northern Arizona and southern Utah (including the Grand Canyon area and Zion National Park), the coastal mountains of California, and northern Baja California ...
The California condor is critically endangered. It formerly ranged from Baja California to British Columbia, but by 1937 was restricted to California. [52] In 1987, all surviving birds were removed from the wild into a captive breeding program to ensure the species' survival. [52] In 2005, there were 127 Californian condors in the wild.
Chameleons - Colour change signals a chameleon's physiological condition and intentions to other chameleons. [3] [4] Because chameleons are ectothermic, they change color also to regulate their body temperatures, either to a darker color to absorb light and heat to raise their temperature, or to a lighter color to reflect light and heat, thereby either stabilizing or lowering their body ...
California condors' skin on the neck varies in color, depending on the age of the birds. During the breeding season, adult birds' skin color can be cream, pink, yellow, or orange. [4] Most commonly, Andean tend to utilize white or black skin tones, while the California condor leans towards pink.
It was named after the zoologist Constantin Wilhelm Lambert Gloger, who first remarked upon this phenomenon in 1833 in a review of covariation of climate and avian plumage color. [1] Erwin Stresemann later noted that the idea had been expressed even earlier by Peter Simon Pallas in Zoographia Rosso-Asiatica (1811). [ 2 ]
The California quail is the official state bird of California. This list of birds of California is a comprehensive listing of all the bird species seen naturally in the U.S. state of California as determined by the California Bird Records Committee (CBRC). [1] Additional accidental and hypothetical species have been added from different sources.
The first starts a few days after fledging replacing the juvenile plumage with an auxiliary formative plumage; the second a month or so later giving the formative plumage. [3] Abnormal plumages include a variety of conditions. Albinism, total loss of colour, is rare, but partial loss of colours is more common.
In flight over Cuba. The turkey vulture received its common name from the resemblance of the adult's bald red head and dark plumage to that of the male wild turkey, while the name "vulture" is derived from the Latin word vulturus, meaning "tearer", and is a reference to its feeding habits. [9]