... 尾切除术 tail amputation 覆尾羽 tail coverts 尾皱襞 tail fold ...
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... secondary coverts 次级覆羽 tail coverts 尾覆羽 tail-coverts 覆尾羽 ...
tail-coverts 覆尾羽
lower punch tail coverts 尾下覆羽
During courtship the crested male common peacock displays his elongated upper tail coverts-a magnificent green and gold erectile train adorned with blue-green eyes-before the duller-plumaged peahen.
当求爱时期，有冠毛的普通雄性孔雀会拉长上部隐蔽的羽毛——一种竖立的华丽绿色和金色羽毛与蓝绿色的眼睛结交——站在羽毛色泽呆滞的雌孔雀面前。
youdao
It's the upper tail coverts.
WSJ: Of Feathers, Showgirls and Biology
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