長野県内におけるカササギPica picaの初繁殖例 [in Japanese] The First Breeding Record of Magpie Pica pica in Nagano Prefecture [in Japanese]
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The first breeding of <i>Pica pica</i> was observed in Oami, Otari Village, Nagano Perfecture (36° 53′20″N, 137°52′10″E) in 1997. The nest was built on a utility pole with twigs of Japanese Cedar, a kind of oak etc. All chicks fell from the nest and died before fledging.
- Japanese Journal of Ornithology
Japanese Journal of Ornithology 46(3), 177-178, 1998-02-25
The Ornithological Society of Japan