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Southern house wren Troglodytes musculus Naumann, 1823 (Passeriformes: Troglodytidae) is widely distributed in Brazil, occurring on the edges of forests and urban areas, considerable a passeriform usually found in antropized landscape. Birds use vocal signs in diverse activities during the circadian cycle (eg.: in reproduction, territorial defense, alert of predators and competitors, individual recognition, etc), employing vocal signs under energetic balance for development of diary activities. The aim of this study was to evaluate the diary activity period of T. musculus through their vocalizations. The sampling were made during two days in edges of Atlantic Forest fragments in João Pessoa, State of Paraíba, Brazil. Using the method of playback, vocal response of Southern house wren was measured in six periods for each day: H1 (5 h-7 h), H2 (7 h-9 h), H3 (9 h-11 h), H4 (11 h-13 h), H5 (13 h-15 h) and H6 (15 h-17 h). Differences among the periods was tested through of Kruskall-Wallis test, and Mann-Whitney test with Bonferroni’s corrections. In order to separate the periods groups, was applied Cluster test and non-Metric Multidimensional Scaling. Were registered 2,421 vocalizations, which 2,229 in morning (H1 to H3) and 122 (H4 to H6) in the afternoon period. Results indicated there were differences among the diary activities period of T. musculus (p = 0.0008171), with early hours of morning (H1 and H2) did not differ between each other Received February 02, 2018 Accepted April 13, 2018 Released April 30, 2018

brazilian journal of biological sciences

Activity period of Southern house wren Troglodytes musculus Naumann, 1823 (Passeriformes: Troglodytidae) on edges of Atlantic Forest fragments in João Pessoa (State of Paraíba, Northeast Brazil)