Xanthochromism
Encyclopedia
Cornell University
Cornell University is an Ivy League university located in Ithaca, New York, United States. It is a private land-grant university, receiving annual funding from the State of New York for certain educational missions...
survey of unusual-looking birds visiting feeders reported that 4% of such birds were described as xanthochromistic (compared with 76% albinistic
Albinism
Albinism is a congenital disorder characterized by the complete or partial absence of pigment in the skin, hair and eyes due to absence or defect of an enzyme involved in the production of melanin...
). The opposite of xanthochromism, a deficiency in or complete absence of yellow pigment, is known as axanthism.
Birds exhibiting genetic xanthochromism, especially deliberately-bred mutations of several species of parrot
Parrot
Parrots, also known as psittacines , are birds of the roughly 372 species in 86 genera that make up the order Psittaciformes, found in most tropical and subtropical regions. The order is subdivided into three families: the Psittacidae , the Cacatuidae and the Strigopidae...
in aviculture
Aviculture
Aviculture is the practice of keeping and breeding birds and the culture that forms around it. Aviculture is generally focused on not only the raising and breeding of birds, but also on preserving avian habitat, and public awareness campaigns....
, are termed "lutinos". Wild birds in which xanthochromism has been recorded include Yellow Wagtail, Wood Warbler
Wood Warbler
The Wood Warbler is a common and widespread leaf warbler which breeds throughout northern and temperate Europe, and just into the extreme west of Asia in the southern Ural Mountains...
, Cape May Warbler
Cape May Warbler
The Cape May Warbler, Dendroica tigrina, is a small New World warbler. It breeds in northern North America. Its breeding habitat spans across all but the westernmost parts of southern Canada, and into the Great Lakes region and New England. It is migratory, wintering in the West Indies...
, Rose-breasted Grosbeak
Rose-breasted Grosbeak
The Rose-breasted Grosbeak, Pheucticus ludovicianus, is a large seed-eating songbird in the cardinal family . It breeds in cool-temperate North America, migrating to tropical America in winter.-Description:...
, Evening Grosbeak
Evening Grosbeak
The Evening Grosbeak is a large finch. In the past, it was treated in a genus of its own as Hesperiphona vespertina, but is now usually placed in the same genus as the Hawfinch of Eurasia....
, Red-bellied Woodpecker
Red-bellied Woodpecker
The Red-bellied Woodpecker, Melanerpes carolinus, is a medium-sized woodpecker of the Picidae family. It breeds in southern Canada and the northeastern United States, ranging as far south as Florida and as far west as Texas...
, Scarlet Tanager
Scarlet Tanager
The Scarlet Tanager is a medium-sized American songbird. Formerly placed in the tanager family , it and other members of its genus are now classified in the cardinal family . The species's plumage and vocalizations are similar to other members of the cardinal family.-Description:Adults have pale...
, Northern Cardinal
Northern Cardinal
The Northern Cardinal or Redbird or Common Cardinal is a North American bird in the genus Cardinalis. It can be found in southern Canada, through the eastern United States from Maine to Texas and south through Mexico...
, Great Spotted Woodpecker
Great Spotted Woodpecker
The Great Spotted Woodpecker , Dendrocopos major, is a bird species of the woodpecker family . It is distributed throughout Europe and northern Asia, and usually resident year-round except in the colder parts of its range...
, Common Tailorbird
Common Tailorbird
The Common Tailorbird is a songbird found across tropical Asia. Popular for its nest made of leaves "sewn" together and immortalized by Rudyard Kipling in his Jungle Book, it is a common resident in urban gardens. Although shy birds that are usually hidden within vegetation, their loud calls are...
and Crimson-breasted Shrike.