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Papers in this group

1 - 20 of 24
  1. We investigated if passerine birds act as important predators of small vertebrates within the Neotropics. We surveyed published studies on bird diets, and information on labels of museum specimens, compiling data on the contents of 5,221 stomachs.…
  2. Tropical wet forests are commonly perceived as stable and constant envi- ronments. However, many rain forest organisms reproduce seasonally. To understand the proximate regulation of life history events in tropical organisms, we asked three…
  3. “Campos rupestres” comprises the open vegetation growing above 900 m altitude mainly along the Espinhaço Range, eastern Brazil. We presents the first thorough assessment concerning the bird community structure and dynamics in campos rupestres of…
  4. We investigated if passerine birds act as important predators of small vertebrates within the Neotropics. We surveyed published studies on bird diets, and information on labels of museum specimens, compiling data on the contents of 5,221 stomachs.…
  5. Birds of a forest remnant in the Iron Quadrangle of Minas Gerais, southeastern Brazil. ABSTRACT - The Iron Quadrangle (IQ) is a region of southeastern Brazil known for having good-quality mineral deposits of worldwide economic importance. The iron…
  6. We surveyed the avifauna of Alto do Palácio, Serra do Cipó National Park, Minas Gerais state, Brazil. The park lies in the southern Espinhaço range, a significant biogeographical barrier that separates the forest areas of the Atlantic Forest on its…
  7. Lesser Grass Finch Emberizoides ypiranganus ranges through south-east Brazil (São Paulo to Rio Grande do Sul) and adjacent Argentina and Paraguay. It was recently found in Minas Gerais at Rio Preto State Park. Here, we present further records for…
  8. ABSTRACT: The play behavior of a Sharp-shinned Hawk (Accipiter striatus) chasing a flock of White-naped Jay (Cyanocorax cyanopogon). Play behavior in birds is difficult to recognize and interpret, and poor documented in Brazil. In this note, we…
  9. Recent studies in the field of behavioural ecology have revealed intriguing variation in behaviour within single populations. Increasing evidence suggests that individual animals differ in their average level of behaviour displayed across a range of…
  10. Tropical birds lay smaller clutches than birds breeding in temperate regions and care for their young for longer.We develop a model in which birds choose when and how often to breed and their clutch size, depending on their foraging ability and the…
  11. Different authors have used different methods and nomenclatures to describe bird nests of the Neotropical region, leading to mud- dled terminology which makes comparisons among published data difficult. The present study suggests a standardization…
  12. Successful reproduction for birds in systems with high nest predation rates may be explained by two alternatives. The first hypothesis is that nest-predation is avoided, perhaps by nest-site or territory selection, parental behavior and so on. This…
  13. —Tropical birds offer unique opportunities to test ecological and evolutionary theory because their life history traits are so diverse and different from temperate zone models upon which most empirical studies are based. We review recent studies on…