Winter roosting sites and roosting behavior of tree creepers (Certhia familiaris) in Hokkaido [Japan]
2007
Matsuoka, S.(Forestry and Forest Products Research Inst., Sapporo (Japan). Hokkaido Research Center)
Five winter roosting sites of tree creepers were recorded in the broad-leaved deciduous forests of southeastern Sapporo, Hokkaido, northern Japan. Tree creepers selected hemispherical shallow holes on trunks, nestled into them alone at or around sunset in Sapporo. In all cases nothing covered their backs and hid them from lateral view. The same types of winter roosting sites and roosting behaviors suggest that such roosting site selection and behaviors are common in populations in Hokkaido that is located in the eastern edge of its distribution.
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