【摘要】 <正> 丹顶鹤(Grus japonensis)和白鹤(Grns leucogtranus)均已列入《世界濒危种鸟类红皮书》,(Vincent,1966年,King,1979年)。这两种鹤的种群数量据1982年2月在印度召开的世界鹤类会议统计,全世界丹顶鹤总数约1100只、白鹤总数280只左右,是世界公认的濒危鹤类,也是我国一类保护动物。为了挽救珍贵稀有的鹤类,我国及世界一些国家正积极地进行研究并加以保护。更多还原

【Abstract】 The overwintering of Red Crowned Crane (Grus japonensis) and Siberian Crane (G. leucogeranus) was studied during 1979—1984. The overwintering land of Red Crowned Crane was mostly found at sea beach of the East Sea in Jiangsu Province in winter of 1979. In addition, other overwintering lands of Red Crowned Crane were scatteredly located in the south of the Bo Yang Lake, Jiangxi Province and in the Shi Jiu Lake, Anhui Province. The overwintering districts of Red Crowned Crane is at 28°30′—34°30′, 116°—121° E. Feeding and wandering of Red Crowned Crane is in flock of parents with their chickens or in decate and near 100 individuals, within their own home range, that occupies about 1 square kilometre. The overwintering period is about 4 months, from late Oct. to late Feb. of the next year. There are about 500 Red Crowned Cranes on the overwintering land in China.The great flock of Siberian Crane, that constitutes from 737 cranes, among which there are 107 chickens, was observed in the Bo Yang. Lake, Jiangxi Province.更多还原