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14.310  Articles
1 of 1.431 pages  |  10  records  |  more records»
Leucism is a partial hypopigmentary congenital disorder that indicates low levels of genetic diversity and is considered to be an unusual trait in wild populations. In continental America, few cases of abnormal coloration in vertebrates have been recorded... see more

We report the presence of an individual of Great-tailed Grackle with partial leucism, in a locality of the State of Nuevo León, México, on 28 November 2014. One female with abnormal coloration in the upper tail feathers was recorded and photographed.

Leucism is a genetic condition that manifest as the total or partial lack of coloration, as result of a deficiency in the melanin deposit in the skin and fur.  We present the first occurrence of leucism in Glossophaga soricina valens from Peru, a nec... see more

We report the presence of a House Finch (Haemorhous mexicanus) with partial leucism in the city of Pachuca, Hidalgo. The individual was observed in two occasions interacting with other finches that had regular coloration. Pigment aberrations may help iden... see more

Aberrant plumages in Mexican birds are rarely documented; in this work we report a record of partial leucism in the House Sparrow (Passer domesticus) in Cd. Victoria, Tamaulipas, Mexico. We discuss on the low incidence of this phenotypic alteration

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Pigment disorders such as albinism, leucism and progressive greying, which cause the absence of melanin pigments in all or parts of the plumage and bare parts, have been reported in many wild bird populations including Acrocephalus warblers.  Basra R... see more

Leucism is the partial or total lack of melanin in the feathers of birds, but it can be expressed in different forms. Currently, little information on leucistic wild tanagers is available. In this short communication we report an individual of the Fawn-br... see more

We report the first observations of partial leucism in Columbina inca and Quiscalus mexicanus, and also present the first record of albinism in Mexico for Q. mexicanus. We observed the leucistic individuals in human disturbed areas. This suggests that oth... see more

1 of 1.431 pages  |  10  records  |  more records»