【摘要】 于2001年9月至2002年1月,对合肥市秋季和早冬灰椋鸟集群活动规律进行了观察.结果表明:9月底在合肥市始见大群的灰椋鸟夜栖于法国梧桐上,11月中旬夜栖群个体数量达到高峰.12月上中旬开始成批离开合肥市.这期间,白天的觅食群和夜晚的夜栖群活动规律明显不同,前者数量小,在市区及郊区的农田和村庄附近活动;后者数量很大,主要栖息在法国梧桐上.光照强度是决定灰椋鸟早上飞离夜栖地时间的主要因子,随着夜长日短,有推迟飞离,提早返回的趋势.食物主要是香樟,苦楝等7种植物的果实.更多还原

【Abstract】 Ashy Starlings’(Sturnus cineraceus) group activity in autumn and early winter in Hefei has been observed from September of 2001 to January of 2002. The results manifest that at the end of September groups of Ashy Starlings inhabited on Platanus hispanica at night. In the middle of November the number of groups of Ashy Starling that inhabited at night reaches its maximum and in the middle of December they begin to depart from Hefei in ?ocks. During this period, the activity of groups that looked for food in daytime was quite di?erent from the groups that inhabited at night. The formers were small and moved about in the city and suburban ?elds and villages. The latter were large and mainly inhabited on Platanus hispanica. The luminosity was the main factor that determined the time that Ashy Starlings departed from the place where they inhabited at night in the morning. As the day time became shorter and the night time became longer, they tended to leave later and to return earlier. Their food were mainly the fruits of such 7 plants as Cinnamomum camphora, Melia azedarach, etc.更多还原