摘要
1999-2003年春夏季节对河南郑州城区池鹭的繁殖习性进行了观察.池鹭于每年4月下旬至9月底在城区行道树上营巢繁殖,居留期约155 d. 1999-2000年,池鹭单独成群;2001年池鹭开始与夜鹭,白鹭共同形成混合集群.繁殖对数由1999年的360对下降至2003年的94对.池鹭为单配制,但有配偶外交配行为,约占交配总数的40.78%. 池鹭窝卵数为4～6枚(5.10±0.57),每窝出雏数为1～6只(4.50±1.35),孵化率为88.24%,留巢期(32.7±1.059) d,雏鸟18日龄成活率为93.33%.
Observations on the breeding characteristics of Chinese Pond Heron （Ardeola bacchus） had been taken in Zhengzhou urban area, Henan province during the breeding seasons from 1999 to 2003. The results show that Chinese Pond Herons bred in the shade trees from late April to the end of September each year, staying about 155 days. From 1999 to 2000 only Chinese Pond Heron stayed on Weiwu road, keeping the distance about hundreds of meters from Black-crowned Night Herons（ Nycticorax nycticorax ）. With Night Herons population enlarging continuously, Chinese Pond Heron began to live together with Night Herons and Little Egret （ Egretta garzetta ）. Breeding pairs of Chinese Pond Heron decreased from 360 in 1999 to 94 in 2003. Though Chinese Pond Heron is monogamy, extrapair copulations were popular,taking 40.78% of total number approximately. Clutch size of Chinese Pond Heron was 5.10 ± 0.57 （4 to 6 ） , brood size was 4.50 ± 1.35 （ 1-6 ） , hatching rate was 88.24% and the length of nursing period was 32.7 ± 1.059 d. The young birds survival rate of 18 days is 93.33 %.
出处
《河南农业大学学报》
CAS
CSCD
北大核心
2005年第3期356-360,共5页
Journal of Henan Agricultural University
基金
河南省教育厅资助项目(2000180027)
河南省环保局资助项目[豫环科[2000]20-16]
关键词
池鹭
生态
繁殖
城市环境
郑州
Ardeola bacchus
ecology
breeding
urban area
Zhengzhou
