This book examines current knowledge on the evolution, ecology, and conservation biology
of both New World vultures (Cathartidae) and Old World vultures (Accipitridae). Extinct …

Plumage aberrations are not uncommon in birds, but there is some confusion in the
literature, especially in relation to albinos. Plumage aberrations in birds are better known in …

Birds are known for their brilliant colors and extraordinary patterns. Sightings of individuals
with atypical plumage often cause considerable excitement in the birding public, but receive …

Este artículo analiza 61 casos de aberraciones cromáticas del plumaje (ausencia total o
parcial de pigmentos en algunas o en todas las plumas) en 43 especies de aves silvestres …

Leucism is an inherited disorder, characterized by the lack of pigments in part or all of the
body, normal coloration of the eyes and, in birds, in naked parts such as the bill and legs …

Abstract∙ We present information on two cases of color aberrations in two species of vultures:
one individual of Turkey Vulture (Cathartes aura) in Mexico and one of Black Vulture …

Se documenta la presencia de aberraciones de pigmentos de melaninas en la coloración
de las plumas en 4 especies acuáticas en Baja California Sur: Podiceps nigricollis, Egretta …

We report the presence of leucism in the plumage of three species of migratory shorebirds
observed in NW Mexico in the last five years: Willet Tringa semipalmata, American Avocet …

Describimos un individuo de mirlo pardo (Turdus grayi) con leucismo parcial. El ejemplar
fue capturado en una red de niebla el 11 de mayo de 2014 en un bosque tropical …

Leucism is the most common plumage aberration recorded in wild birds around the world,
but very few records exist for Neotropical wild bird species with black plumage. In this note I …