鸟有什么特点？（用英语回答）

bird's chest developed, there is sudden keel. There are air bags, dual-breathing, which developed the rectum, non-storage stool.
鸟的胸肌发达，有龙骨突。有气囊，可双重呼吸，它的直肠发达，不储存粪便

Parrot（鹦鹉）：Talking parrot

Thrush（画眉鸟）： Thrush brown body, white belly, head, neck and back are black stripe, a white eye socket, called the voice of a good listen.