Abstract
To control the Japanese pine sawyer using woodpeckers, we researched the habitat features of their nests, and tested the availabilities of short logs and bottomless roost boxes (Nakamura et al. 1995) for their breeding or roosting. The researches on nesting habitat showed that the Japanese green woodpecker (Picus awokera) bored the nest holes in the trunk of live deciduous broad-leaved trees in many cases, while the great spotted woodpecker (Dendrocopos major), the white-backed woodpecker (D. leucotos) and the Japanese pygmy woodpecker (D. kizuki) used dead trees or dead boughs also. The Japanese green woodpecker and the Japanese pygmy woodpecker bored entrance holes of their nests in short logs, showing that they selected the short logs for nesting. However, they did not complete the nest holes. Bottomless roost boxes were rarely used by woodpeckers. This suggest that it is difficult to attract woodpeckers using this type birdboxes.
