查看完整版本: 請問臉上多兩條黃線有物分別

請問臉上多兩條黃線有物分別

[img]http://farm7.staticflickr.com/6225/6376628085_9a4fd4112a_b.jpg[/img]

[img]http://farm7.staticflickr.com/6115/6376154547_72212afd5c_b.jpg[/img]

成鳥發情時期的裝飾，主要在夏天出現。

張浩輝

多謝回復，問多樣，雌雄都一樣？

Yes.  Same for male and female.

The length of the bill can be used to distinguish male to female.  However, this is not easy at all.  There may be other methods as well.  We need careful birdwatchers or photographers to work on problems like this.

HF Cheung

I see. Thanks.

哦~原來是這樣
感謝大大分享~~







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