Results 31 to 40 of about 1,588 (195)
Haemosporidian parasites and incubation period influence plumage coloration in tanagers (Passeriformes: Thraupidae). [PDF]
Proc Biol Sci, 2022 Birds are highly visually oriented and use plumage coloration as an important signalling trait in social communication. Hence, males and females may have different patterns of plumage coloration, a phenomenon known as sexual dichromatism. Because males tend to have more complex plumages, sexual dichromatism is usually attributed to female choice ...
Aguiar de Souza Penha V +13 more
europepmc +4 more sources
Nuevo registro del Frutero Cabeza Negra (Nemosia pileata) en la provincia de Córdoba, Argentina
Nuestras Aves, 2021 En este trabajo reporto el segundo registro de Frutero Cabeza Negra (Nemosia pileata) para la provincia de Córdoba, Argentina. Observé y fotografié un macho en San Clemente (departamento Santa María).
Alasco López
doaj +1 more source
Nuestras Aves, 2023 O Saí-canário (Thlypopsis sordida) é uma espécie de ave pertencente à família Thraupidae, que ocorre da Venezuela ao sul do Brasil, e tem preferência por estratos florestais mais altos, onde vive solitária, em pares ou em pequenos grupos. Neste trabalho
Gabriel Brutti
doaj +1 more source
Morphological variation in the Cinnamon Tanager Schistochlamys ruficapillus Aves: Thraupidae) [PDF]
Zootaxa, 2014 The Cinnamon Tanager Schistochlamys ruficapillus inhabits semi-open grassy country, primarily in Brazil south of Amazonia. Three subspecies are currently recognized, one of which, S. r. sicki, is poorly known and endemic to the central Brazilian savannas (Cerrado).
Lopes, Leonardo Esteves +1 more
openaire +3 more sources
Mites of the genus Neharpyrhynchus Fain (Acariformes, Harpirhynchidae) from Neotropical birds
ZooKeys, 2011 Three new species of parasitic mites of the genus Neharpyrhynchus Fain (Acariformes, Harpirhynchidae) are described from Neotropical birds, N. chlorospingus sp. n. from Chlorospingus pileatus (Passeriformes, Emberizidae) from Costa Rica, N.
Andre Bochkov, Ivan Literak
doaj +1 more source
Biogeographic origins of Darwin's finches (Thraupidae: Coerebinae) [PDF]
The Auk, 2018 ABSTRACT Darwin's finches are considered a classic example of an adaptive radiation, and have been the focus of numerous studies from ecological and evolutionary perspectives. Few studies, however, have attempted to investigate the biogeographic origins of Darwin's finches.
Erik R. Funk, Kevin J. Burns
openaire +1 more source
Birds That Don't Exist: Niche Pre-Emption as a Constraint on Morphological Evolution in the Passeroidea. [PDF]
Ecol LettWe use topological data analysis to reveal a persistent morphological gap in a major group of songbirds (superfamily Passeroidea). The gap remained unoccupied for millions of years, even though nearby morphologies are common and the same body form exists in other groups of birds.
Chia SY +4 more
europepmc +2 more sources
ACI Avances en Ciencias e Ingenierías, 2017 Las plantas del género Axinaea (familia Melastomataceae) presentan un novedoso sistema de polinización recientemente descubierto, que involucra aves que tradicionalmente no son consideradas polinizadoras (específicamente de las familias Thraupidae ...
Juan M Aguilar, Boris Tinoco
doaj +1 more source
Quantifying the success of prey crypsis, aposematism, and evasiveness in avoiding predator attack. [PDF]
EcologyAbstract Antipredator defenses typically act at distinct stages of the predation sequence—encounter, identification, approach, and subjugation. However, their effectiveness has rarely been quantified and compared simultaneously in wild predator–prey systems.
Linke D +7 more
europepmc +2 more sources
Posible incidencia de viruela u otro patógeno de aves en Guatemala
Huitzil, 2019 Durante enero y febrero de 2019 hicimos observaciones casuales y documentamos aves con lesiones macroscópicas, aparentemente por viruela o algún tipo de tumor en la cabeza.
Bárbara Isabela Escobar Anleu +4 more
doaj +1 more source