【摘要】 <正> 巨嘴柳莺 Phylloscopus schwarzi(Radde)是长白山区常见的夏候鸟,在东北分布亦比较广泛。关于它繁殖生态的研究,国内外资料较少,仅(1926)、山阶(1941)、傅桐生等(1965)有过报道。笔者1978年在长白山南坡进行了观察,1979—1980年又在北坡作了观察,现将观察结果报道如下。更多还原

【Abstract】 Observations were mabe on the breeding behavior of Thick-billed Willow Warbler at Chang—bbai mountains,Jilin province.during the spring and summer sesions of 1978—1980.Results obtained may be given below. 1.The breeding period of Thick—billed Willow Warbler in from May middle to the beginning,of October.The birds stay in Chang —bai mountains for about 120 days,being distributed in the coniferous zone at 800—1500m above the sea level. 2.The Thick—billed Willow ,Warbler build their nests at over- ground 10—65cm.The nest is reported as being a deep cup placed upon the limb of a tree at five feet or more from the ground.Female build their nest,it takes 3—4 days to build a new one. 3.During the period of egg laying,an egg is laid every day. Eggs number four to six,are rosy to red ground color,marked with pale brown,rustyellowish and with twisted brown streaks. 4.The female shares in feeding the young,she Camt back ot the nest 259 in all visits por day.The average number of visits ma- de in an hour in 17.3.Theyoung are fed for 13—15 days defore leaving the nest.During this period,their body weight increases to 9.8gms. The nestlings show an effective control of their body tomperature from the 9.5th day after hatching.更多还原