【摘要】 2003年及2004年3~6月在河南郑州市区对夜鹭(Nycticorax nycticorax)的求偶行为进行了观察。结果表明,3月中旬至5月底雄性夜鹭表现出占区及固定的仪式化求偶行为,主要包括伸展炫耀、扬举炫耀、炫耀羽毛和配偶形成后的相互爱抚4个方面,其中前两种行为是夜鹭主要的求偶行为。在营巢地,求偶行为从早上日出之前夜鹭觅食归来开始,一直持续至日落前后。夜鹭的配偶选择包括雄性之间对巢区的竞争、雄鹭与雌鹭的相互选择等一系列过程。更多还原

【Abstract】 The courtship displays of Black-crowned Night Herons (Nycticorax nycticorax) were observed in urban area of Zhengzhou, Henan Province from March to June, 2003 and 2004. Male herons occupied territories and displayed a variety of stereotyped behaviors. From mid-March to the end of May. The males showed stretching display, raising display, preening their feathers,and mutual caressing with their bills after pair formed. The stretching display and raising display were the main behaviors of courtship. The courtship displays started before sunrise when the birds return from foraging and lasted until sunset. Pair formations of Black-crowned Night Herons were a complex process, including competition for territory between males and interplay selection between males and females.更多还原