介绍布谷鸟的英语作文，1句也行

pigeon is similar, but more elongated upper abdomen, dark gray, with transverse spot. The foot has four toes, two toe forward, backward toe two. Rapid silent flight.布谷鸟体形大小和鸽子相仿，但较细长，上体暗灰色，腹部布满了横斑。脚有四趾，二趾向前，二趾向后。飞行急速无声。