樹上に設置した人工巣へのオオタカの営巣 [in Japanese] Goshawk Accipiter gentilis breeding on a manmade nest constructed in a fir tree. [in Japanese]
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In Nov.1994, the Japn Falconers Association constructed two manmade nests for Goshawk in the hilly districts of the western part of Tokyo. One was used by a pair of Goshawk during the 1995 breeding season. The nest (Fig.1), about 1m in diameter, was set at the height of about 18m in a fir tree. The pair succeeded in laying egg and having them hatch, but the young were lost before leaving the nest.
- Japanese Journal of Ornithology
Japanese Journal of Ornithology 47(3), 119-120, 1999-02-25
The Ornithological Society of Japan