黄臀鹎繁殖生态的初步观察

2004年4-6月，在佛坪保护区狮子崖沟和大古坪的白马沟，采用路线法和定点直接观察法对黄臀鹎（Pycnonotus xanthorrhous）的生境选择及繁殖生态进行了初步观察。结果表明，黄臀鹎常栖息于河岸灌丛生境中，栖息位置多为视野开阔的电线上和灌木中；巢结构为3层，筑巢期6～10d，窝卵数3～5枚，孵化期8d，雏鸟留巢12d，雏鸟的平均体重和体长的相关系数r=0．9637，并测量了雏鸟的嘴峰、跗踱、第3枚初级飞羽和初级覆羽及尾长的生长数据等。

Breeding Ecology of Brown-breasted Bulbul

Habitat use and breeding ecology of Brown-breasted Bulbul(Pycnonotus xanthorrhous) was primarily observed by route scanning and direct observation during April-June in 2004.Our results showed that the birds inhabited in the shrubs along creeks and were easily observed perching on the electrical wire and in the bush in the open habitats.Nest_building lasted 6 to 10 days,and structure of nest was in 3 layers.Clutch size was 3-5 and incubation period lasted 8 days.Nestling remained in nests for 12?days.The relative coefficient(r) between mean body mass and length was 0.963?7.And the growth data of bill,tarsus,primary and tail were presented in this paper.