The yellow, red, orange, and brown birds of the world assume their hues because of a pigment embedded in the keratin matrix of feathers.
这种集黄色，红色，橙色和棕色于一身的鸟类，能够呈现出如此多的色彩，得益于它的羽毛角蛋白间质里含有色素。
The officers who found the birds described them as small with brown and black feathers. They were intact and had not been shot.
公路巡逻人员描述死掉的鸟的特征：个头小，羽毛呈棕黑相间，并且头完好无损，没有被射杀的迹象。
Here are a few ideas: Adopt a Brown Pelican through the International bird Rescue Research Center, which picks up oiled birds, cleans and rehabilitates them.
这里有几个想法：通过国际鸟类营救研究中心收养一只棕色的鹈鹕，这只鸟能从海水中拣起被油浸透的鸟，并为它们清洗和重新为它们找到栖息地。
The officers who found the birds described them as small with brown and black feathers. They were intact and had not been shot。
公路巡逻人员描述死掉的鸟的特征：个头小，羽毛呈棕黑相间，并且头完好无损，没有被射杀的迹象。
The officers who found the birds described them as small with brown and black feathers.
谁发现的人员介绍他们的鸟的羽毛，黑色和棕色小。
Genus of large brown long-billed wading birds found in warm swampy regions of the western hemisphere: courlan; limpkin.
在西半球暖湿沼泽区可见的一种长嘴涉水鸟；库隆鸟；涉禽之一属。
Willie, when I was feeding the birds just now, a little brown bird flew away with a crumb in its bill.
威利，刚刚我喂鸟的时候，一只棕色的鸟用嘴叼着一块面包屑飞走了。
My mother bought me two little birds this afternoon. The birds are in a yellow cage. They are brown. They are very cute. They sing all the time.
今天下午，我和爸爸妈妈在从外公家回家的路上，看见路边有一个小摊在卖鸟。
Young birds resemble the female, but the brown plumage looks scaly.
年轻的鸟相似女性，但是褐色鸟类羽毛看起来有鳞。
Young birds resemble the female, but the brown plumage looks scaly.
年轻的鸟相似女性，但是褐色鸟类羽毛看起来有鳞。
应用推荐