冬羽 meaning in English
eclipse plumage
winter plumage
Examples
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现在是冬羽啊，当然看不见红颈啦，只有繁殖羽才会看得见的它的红颈，希望明年春天时能够拍到。 - Adult winter mongolian gull : this bird has new primaries with white tips ( mongolian is the first of the three species to complete its primary moult )
蒙古银鸥成鸟冬羽：这只已有完整的初级飞羽白色羽尖新羽(蒙古银鸥是三种中最早完成换羽的) 。 - Your 1 , 2 , 3 seem likely to be 1 . black - headed gull ( despite the misleading - looking leg colour , it has ear covert spot of one of the " hooded " gulls ) ; 2 . black - tailed gull first winter ; 3 . ?
你的1 , 2 , 3看起来像是1 .红嘴鸥(尽管有误导的脚部颜色,它有"带头巾的"鸥(译注:如棕头鸥,红嘴鸥,黑嘴鸥等)其中一种的耳部覆羽斑点) ; 2 .黑尾鸥一龄冬羽; 3 . ? - Adult winter heuglin ' s gull : the primary moult begins much later than in other big gulls and progresses slowly through the winter , and moult limits can usually be seen into january - february of the following year ( p9 - 10 )
灰林银鸥成鸟冬羽：初级飞羽换羽时间较其他种为迟而且整个冬季都在缓慢换羽，所以第二年一二月一般都还可以看到换羽的界限( p9 - 10 ) 。 - Adult winter heuglin ' s gull : note dark saddle , head streaking typically restricted to nape and “ collar ” , bright yellow legs ( which usually become a much duller yellow mid - winter ) and old primaries lacking white tips
灰林银鸥成鸟冬羽：注意其鞍部羽色暗灰、头部纵纹一般仅限于后颈及领部、脚鲜黄色(在冬季中期会变得较暗黄色) 、而且初级飞羽旧羽没有白色羽尖。