cowbird

详细解释:n. 牛鹂

英语解释：

名词 cowbird:

North American blackbird that follows cattle and lays eggs in other birds' nests

详细解释：

cow.bird

n.（名词）
Any of various blackbirds of the genusMolothrus, especially the common North American species M. ater, that lay their eggs in the nests of other birds and are often seen accompanying herds of grazing cattle.
牛鹂：任一种牛鹂属 .的黑色鸟类，尤指北美洲常见的 褐头牛鹂 ，在其他鸟类的巢中下蛋，并经常可以看到它们和草场上的牛群在一起

来源：
[From their habit of staying with cattle]
[由于它们跟随牛群的习性而得名]