鸟,小朋友们都很熟悉,它们在天空中飞来飞去,有时还会停在我们的窗台上,但有些鸟小朋友就不一定熟悉了,比如世界上最小的鸟——蜂鸟。蜂鸟的大小、体重和蜜蜂差不多,飞行时又能发出嗡嗡的响声,所以被称作蜂鸟。蜂鸟的羽毛有多种颜色,非常好看,蜂鸟的身体娇小,身长不足5厘米,但是它有非凡的飞行本领。它的 Birds and children are familiar. They fly in the sky and sometimes on our windowsill, but some birds and young children may not be familiar, such as the hummingbird, the youngest bird in the world. Hummingbird size, weight and bees about the same, the humming sound of the flight, it is called hummingbirds. Hummingbird feathers have a variety of colors, very nice, hummingbird body petite, less than 5 cm in length, but it has extraordinary flying skills. its