Carotenoids are pigments responsible for most bright yellow, red, and orange hues in birds.
Their distribution has been investigated in avian plumage, but the evolution of their …

Due to massive deforestation and forest fires, the cock-of-the-rock or tunqui (Rupicola
peruvianus), the national bird of Peru, is under serious threat in the country. One of the major …

Rupicola peruvianus Latham, known as the Andean Cock-of-the-Rock or locally as Tunqui,
is distributed in the Andean cloud forests of South America from Venezuela to Bolivia. Here …

Birds in Winter is the first book devoted to the ecology and behavior of birds during this most
challenging season. Birds remaining in regions with cold weather must cope with much …

ABSTRACT Red-ruffed Fruitcrow (Pyroderus scutatus scutatus) occurs in humid forests of
Brazil, Paraguay, and Argentina. The bird has disappeared from many regions of Brazil due …

Birds (Aves) are the most species-rich terrestrial vertebrate group alive today, with a deep
evolutionary history extending back to the Cretaceous and surviving through the Cretaceous …

Andean Cocks-of-the-rock (Rupicola peruvianus; ACOR) are frugivorous, tropical lekking
birds iconic to Andean cloud forests. Little is known about ACOR natural history outside of …