Daniel Tourem Gressler

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The identification of predators of birds’ nests, crucial to a better understanding of predator-prey interactions, remains poorly known. Here we provide evidence that birds, and especially passerines, may depredate birds’ nests in the Cerrado (Neotropical Savannah) of Central Brazil. Data was collected primarily in a Conservation Unit (Estação Ecológica de(More)
Sex allocation in cooperative breeding species may be influenced by the return in fitness that parents receive when producing offspring of each sex, especially if helping behavior is sex-specific. Factors such as the presence of helpers assisting the breeding pair, resource availability, and timing of breeding may also influence brood sex ratio. In this(More)
Suitability of degraded areas as breeding habitats can be tested through assessment of nest predation rates. In this study we estimated nest success in relation to several potential predictors of nest survival in the Stripe-tailed Yellow-finch (Sicalis citrina) breeding in abandoned mining pits at Brasília National Park. We monitored 73 nests during the(More)
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