When female cowbirds raised in isolation in soundproof chambers were exposed to recordings of male song, they responded by exhibiting mating behavior.
当雌性牛鹂被单独养在隔音的房间里，听到雄性歌声的录音，它们就会表现出求偶行为。
2
When female cowbirds raised in isolation in sound-proof chambers were exposed to recordings of male song, they responded by exhibiting mating behavior.
当把雌性牛鹂单独养在隔音的房间里，让它们听到雄性的歌声，它们就会表现出交配行为。
3
The eradication of cowbirds has been going on for a while here in an effort to study the effect of their parasitism on endangered birds such as the black-capped vireo and the golden-cheeked warbler.