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White-backed Woodpecker

Dendrocopos leucotos (Bechstein, 1803)

白背啄木鸟
© Black lark



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author: Black lark
location: Buerjin of Altai
date: 2016-05-23
equipment: Canon EOS 60D


comments:
2016-12-26. black lark:

根据资料推算,此时应为孵化期。可是当日观察并拍摄的照片显示:为什么会是两只(一雄一雌)同时在喂食树洞中的这只雄鸟呢?期待一个合理的解说。



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