【摘要】 为了研究粉红背鹈鹕的自然繁殖情况,将5只(2♂3♀)成体粉红背鹈鹕饲养在内有小岛的1 500 m2湖中,通过饲料选择与搭配、投喂方式、行为观察、巢材选择等饲养手段,辅助粉红背鹈鹕的自然繁殖。结果显示:2017年粉红背鹈鹕共产卵3枚,其中弃卵1枚。平均卵重量约174.72 g,长径约92.74 mm,短径约57.16 mm。粉红背鹈鹕幼雏出壳后不会吃食,必须由亲鸟用撕碎的肉条或乳糜哺育幼雏。30—90日龄幼鸟发育较快,躯干发育、喙部发育明显。100日龄能短距离飞翔。更多还原

【Abstract】 We reared five Pelecanus rufescens( 2 ♂ and 3 ♀) on a 1,500 m~2 lake that had small islands. We assisted the natural reproduction of the Pelicans by means of food item selection and formulation,food presentation,behavior observation,and nest material selection. The pelicans laid three eggs in 2017, of which one was discarded. The average egg weight was about 174. 7 g,the major axis was about 92. 7 mm,and the minor axis was about 57. 2 mm. The hatchlings did not eat after hatching but were fed by the parents with torn strips of meat or chyme.From 30 days old to 90 days old,the chicks developed quickly,especially in the trunk and beak.At 100 days old,fledglings began to fly short distances.更多还原