Abstract:Recordings of cougar (Puma concolor) vocalizations are rare in the wild. We made two night recordings from the same individual. The first recording was spontaneous whereas the second was made after a playback emission (using a third party recording) allowing for comparisons. We measured the calls before and after playback stimuli using Raven software and noted that only the minimum fundamental frequency presented differences between calls. As fundamental frequency is closely related to body size, a frequency reduction may indicate territoriality engagement. Our recording seems to be the first held in the Brazilian wild. Little is known about cougar natural history and behavior, and our data suggest that acoustic communication may have an important role on the species intraspecific interactions. Resumo: Registros de vocalizações de onça-parda (Puma concolor) são raros na natureza. Fizemos uma gravação espontânea da espécie à noite, em seguida tocamos o playback com uma gravação prévia disponível em bibliografia, o que fez com que a onça-parda se aproximasse e vocalizasse, permitindo que pudéssemos gravar novamente e assim comparar. Comparamos os chamados antes e depois do estímulo do playback, usando o programa Raven, e constatamos que somente a frequência fundamental mínima apresentou diferenças entre os chamados. Como a frequência fundamental está diretamente relacionada com o tamanho corporal, uma redução neste parâmetro pode significar defesa territorial. Nossas gravações aparentemente são as primeiras realizadas na natureza no Brasil. Pouco se sabe sobre história natural e comportamento da onça parda no Brasil, e nossos dados sugerem que a comunicação acústica tem um papel importante nas interações intraespecíficas desta espécie. Palavras-chave : bioacústica, felino, gravação, Brasil, comunicação acústica. 134 Macarrão, A. et al.
This note provides the first documented record of the Silvery-cheeked Antshrike Sakesphorus cristatus (Wied-Neuwied, 1831) for the state of Sergipe in Brazil, based on a field record and extensive search in the literature, museums, and online databases. The new record of this species presented here may contribute to the knowledge of its occurrence for future assessments of the conservation status of Brazilian birds.
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