Climate and nest opening orientation in Furnarius rufus (Furnariidae)

Iheringia. Série Zoologia

Franco L. Souza¹  Cinthia A. Santos¹ 

[1] ,Universidade Federal de Mato Grosso do Sul Centro de Ciências Biológicas e da Saúde Departamento de BiologiaCampo Grande MS ,Brasil

关键词: Circular statistics;    Furnarius rufus;    nest orientation;    nesting behavior;    Rufous Hornero;    Estatística circular;    Furnarius rufus;    joão-de-barro;    orientação da entrada do ninho;    nidificação;   

DOI  :  10.1590/S0073-47212007000300013

来源: SciELO

【 摘 要 】

The Rufous Hornero (Furnarius rufus) is one of the most common bird species in Brazil. Anecdotal information indicates that nest opening orientation in this species is contrary to wind or rainfall direction. To check for the existence of such a pattern, F. rufus nests were randomly sampled within an urban area in central Brazil to assess whether factors such as wind and vegetation cover influence nest opening orientation. Using circular statistics, no evidence was found that nest-opening orientation was important for the species. These results refuse the expected pattern for tree hollow or enclosed nests. The results suggest that factors such as nesting architecture, nest material, nest microclimate or a combination of these, instead of local climate, must be conditioning nesting behavior in this species.

【 授权许可】

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