摘要
冬季（１１月中下旬至１２月上旬）在全冰封的水库，赤麻鸭白天整日集群停栖在冰面上，未见取食活动。傍晚鸭群飞离冰面去取食，夜间冰上无鸭。停栖鸭群在冰上留下粪迹和足迹，日久粪堆沉入冰面下，被冰包埋。在有活水面的水库，冬日白天可见鸭群取食活动，夜里冰上有停栖的鸭群。冬日的赤麻鸭仍保持配偶关系。
Ruddy shelducks stay in groups on the ice in reservoirs all during the day time without any feeding in winter (from the middle or last ten day period of November to the first ten day period of December). At dusk, shelducks fly to other places for feedings ice. There are a lot of feces and footprints on or in the ice. In some part frozen reservoirs, shelducks feed in the water during the day time and rest on the ice at night. Shelducks maintain their pairs relationship in winter.
出处
《动物学杂志》
CAS
CSCD
北大核心
1997年第6期31-34,共4页
Chinese Journal of Zoology
基金
北京市农业区划办事业费资助
关键词
鸟纲
赤麻鸭
越冬
生态
Ruddy shelduck,Wintering,Total froze water reservoirs,Feces,Fotprint
