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Article
Glaucia Del-Rio, Auteur ; Marquette J. Mutchler, Auteur ; Bruna Costa, Auteur ; Anna E. Hiller, Auteur ; Gisiane Lima, Auteur ; Bianca Matinata, Auteur ; Jessie F. Salter, Auteur ; Luís F. Silveira, Auteur ; Marco A. Rêgo, Auteur ; Donna C. Schmitt, AuteurThe Juruá River is the third largest white-water tributary of the Amazon River, yet, historically, it has not been considered an important barrier for bird communities. The upper region of the Juruá River was the focus of two ornithological coll[...]
Article
Crisley de Camargo, Auteur ; H. Lisle Gibbs, Auteur ; Mariellen C. Costa, Auteur ; Luís F. Silveira, Auteur ; Cláudia A. Rainho, Auteur ; Paulo E. M. Ribolla, Auteur ; Adriane P. Wasko, Auteur ; Mercival R. Francisco, AuteurIn birds, there are two main models for the determination of sex: the ‘Z Dosage’ model in which the number, or dose, of Z chromosomes determines sex, and the ‘Dominant W’ model which argues that a specific gene in the W chromosome may influence [...]
Article
Cesar A. B. Medolago, Auteur ; Flávio K. Ubaid, Auteur ; Mercival R. Francisco, Auteur ; Luís F. Silveira, AuteurABSTRACT Seed-finches are Neotropical passerines highly specialized in the consumption of grass seeds. Most species are endangered because of the conversion of native grasslands into agricultural fields, and they are among the main victims of tr[...]
Article
Erica C. Pacifico, Auteur ; Eduardo A. Barbosa, Auteur ; Thiago Filadelfo, Auteur ; Kleber G. Oliveira, Auteur ; Luís F. Silveira, Auteur ; José L. Tella, AuteurLear's Macaw Anodorhynchus leari is currently listed as Endangered by IUCN. Although it only breeds on cliffs at two protected sites in Bahia State, Brazil, there is no accurate information on population parameters such as the number of breeding[...]
