Observations on breeding behavior of the White-eared Night Heron(Gorsachius magnificus) in northern Guangdong, China  

广东北部海南鳽(Gorsachius magnificus)的繁殖行为观察(英文)

作　　者：高建云[1,2] 吴兆录[1] 苏栋栋[1,2] 钟平生 彭逸生[4] 邹发生[2] 

机构地区：[1]云南大学生态学与地植物学研究所,昆明650091 [2]广东省昆虫研究所/华南濒危动物研究所,广州510260 [3]广东南雄小流坑一青嶂山省级自然保护区,南雄512400 [4]中山大学环境科学与工程学院,广州510006

出　　处：《Chinese Birds》2013年第3期254-259,共6页中国鸟类（英文版）

基　　金：funded by the National Nature Science Foundation of China(Grant No.31172067);the National Nature Science Foundation of China-Guang dong Joint Fund(U0833005);Guangdong Plan Projects(2010B060200034,2011B031100004)

摘　　要：The White-eared Night Heron (Gorsachius magnificus) is a Class II protected species in China. It is difficult to observe in the field and its population is small. The present study reports a new distribution site in Nanxiong County, in northern Guangdong Province, where observations of an active nest were made from 4 May to 14 July 2012, the first time consecutive observations have been made for a period of more than two months. The adults flew away from the nest at night, with a peak at 19:00-20:00 and returned in the mornings with a peak at 04:30-05:30. The peak time for feeding young was at 05:00-05:30, accounting for 26.5%of total feeding activities. No feeding occurred from 10:00 to 16:00. The results of our study of its behavior explain why the White-eared Night Heron is usually observed in the evening just before dark, or in the morning before sunrise, at least during the breeding season. There were about 67 days from hatching to fledging, longer than the fledging time of most heron species. This study is the first to cover the entire period of parental care and fills a gap in previous knowledge.海南鳽(Gorsachius magnificus)是国家II级重点保护鸟类,在野外较难观察到,并且其种群数量较小。2012年5月,我们在广东北部的南雄县发现了一处海南鳽新的分布地。本文报道了该分布地海南鳽的繁殖行为。整个观察期从2012年5月4日持续至7月14日,是迄今为止在野外对海南鳽进行连续观察最长的一次。结果表明:繁殖期海南鳽亲鸟晚上飞离巢地,飞离时间的高峰出现在19:00–20:00;次日早晨返回巢地,归巢时间的高峰为04:30–05:30。亲鸟喂雏的时间多发生在05:00–5:30(占整个该类行为的26.5%),从10:00到16:00没有观察到亲鸟喂雏的行为。本文从繁殖行为结果解释了海南鳽多数情况下是在天黑前或者黎明前容易被观察到的原因。海南鳽从出雏到幼鸟离巢需要67天以上的时间,比多数鹭科鸟类的育雏时间长。研究结果弥补了以往海南鳽育雏时间长短不明确以及育雏行为资料不足的缺陷。

关 键 词：breeding behavior White-eared Night Heron rearing period 

分 类 号：Q958[生物学—动物学]