冬瓜瘦肉汤丹顶鹤濒临灭绝英语作文
格力空调故障代码The Red-Crowned crane (Grus japonensis) has one of the most beautiful dances in the bird world. Crane dances have a very important purpo. Adult cranes live in male-female pairs, and the dances help strengthen the bond between the two birds.
The birds themlves are as striking as their dance. They have bright white bodies with black necks and wing feathers. As their name implies, they also have a "cap" of expod red skin. By controlling blood flow to the cap, the crane can cau it to swell and communicate aggression.
The Red-Crowned crane is one of the most endangered of the 15 crane species. There are only about 1500 of the beautiful birds in the world. As with the other cranes, their main threat is habitat destruction. People want to develop the rich land that cranes need to survive. People cut the long grass that protect the cranes and other animals in the habitats, and fish in the same waters as the cranes.
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电脑定时关机玩具熊
幼儿身高体重Along the Amur River and Lake Khanka, China and Russia are beginning to cooperate to protect the rare birds. (See map on facing page.) The Amur and Khanka areas lie along the border between the two countries and is the habitat for some of the Red-Crowned cranes. The work to protect the two areas is a model for international cooperation for conrvation. If the birds are lost, the people of Asia will have lost an important symbol of luck and peace.晨午检记录表
