1 - 10 of 26 articles
Toucans (Ramphastidae) have always attracted researcher’s attention for their exuberant bill shape and size, which function has been often related to feeding strategies and thermal regulation. In this study, we discuss the importance and use of the bill by Ramphastidae species in intraspecific...
Little is known about the age at which many Neotropical bird species first attempt to breed. We evaluated the breeding condition of 515 adult and subadult males and females among four species of Turdus thrushes (T. nigriceps, T. chiguanco, T. amaurochalinus and T. rufiventris) in Tucumán,...
The White-tailed Kite (Elanus leucurus) is a raptor that has been less studied in the Neotropics than in the Nearctic region, especially in relation to its reproductive behavior. In this study, we report information about the phenology and activity patterns of this raptor at the Pampas of...
Several species of insect-eating birds occasionally visit flowering trees or shrubs to feed on arthropods at flowers instead of nectar or petals. In southeastern Brazil, the Planalto Tyrannulet Phyllomyias fasciatus (10.3 g) and the Gray-headed Tody-Flycatcher Todirostrum poliocephalum (7 g)...
We present the first nesting information for the Tropeiro Seedeater (Sporophila beltoni), a newly described and poorly known Neotropical passerine endemic to southern Brazil. We observed a novel male biased behavior for nest site selection in the Tropeiro Seedeater based on seven events of...
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