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極北柳鶯 / 冕柳鶯?

極北柳鶯 / 冕柳鶯?

請問是 極北柳鶯 / 冕柳鶯?
2011-9-11 TPK
和諧共處  善用自然

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Arctic.  Note that the wing tip reach a point that is close to the tail tip.  The single thin wing-bar and long thin supercilium are also good id features.

HF Cheung

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多謝輝哥指出要點!
和諧共處  善用自然

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