中文摘要：

近年来，陆续在长江中下游越冬地发现东方白鹳（Ciconia boyciana）繁殖个体。为了了解该种在当地的繁殖对策和种群现状，2004—2006年在安庆市望江县武昌湖地区（116°51．15’-116°49．47’E，30°19．53’-30°19．79’N）对东方白鹳的繁殖生物学进行了研究。东方白鹳在当地开始营巢时间不一致，最早为2月5日，而受干扰的繁殖个体则延至5月6日。观察到的巢全在高压线塔上，巢高34．6±0．8m（n=11），巢间距908．8±1039．4m（n=6）。产卵期最早开始于2月11日，最晚6月21日，窝卵数4．2±0．4（4—5）枚（n=6）。育雏期71．0±16．1d（n=3），日育雏5．1±2．6（n=38），雏鸟离巢时间最早6月14日，最晚9月20日。2004和2005年东方白鹳在该地区共营巢8窝，产卵25枚，孵出雏鸟9只，出飞7只。繁殖失败5巢，其中，人工干扰造成4巢失败，高压电击毁1巢。繁殖不同时期，亲鸟的觅食、休息、警戒、取材、翻卵、育雏、交配、在巢、视野外行为时间分配差异显著，而飞翔、行走、理羽、击喙、整巢和其它行为差异不显著。雏鸟在发育的不同时期，觅食、飞翔、休息、整巢、在巢、行走、视野外行为时间分配差异显著，理羽、警戒、击喙和其它行为差异不显著.

英文摘要：

In recent years, some breeding individuals of the oriental white stork Ciconia boyciana were observed in their wintering areas in the middle and lower Yangtze River. In order to assess the status of oriental white stork populations and their breeding strategy, breeding biology was studied from 2004 to 2006 in Wangjiang County, Anqing City, Anhui Province （116°51.15＇ - 116° 49.47＇E, 30°19.53＇ -30°19.79＇N）. The nest building period began at different times, the earliest being on Feb., 5. An the nests were on the electricity pylons, at height of 34.6 ± 0.8 m （ n = 11 ）. The distance between the neighboring nests was 908.8 ± 1 039.4 m （ n = 6）. Egg-laying occurred between Feb., 11 to Jun., 21. The clutch size varied from 4 to 5, and averaged 4.2 ± 0.4 （ n = 6）. The nestling stage was reached by 71.0 ± 16.1 days （ n = 3）. Parent birds provided food for the nestlings at a rate of 5.1 ± 2.6 trips per day （ n = 38）. Nestlings left their nests from Jun., 14 to Sep., 20. During our observations, this population of oriental white storks had 8 broods and laid 25 eggs, of which 9 eggs were hatched, and 7 nestlings survived to fledge. Activity budgets for foraging, resting, vigilance, fetching material, egg turning-over, feeding, mating, on-nest, out of eyeshot show significant difference, however flying, walking, preening, bill clattering, fixing nest and others show no significant difference among different breeding stages. Activity budgets of nestling for feeding, flying, fixing nest, on-nest, walking, out of eyeshot show significant differences. However, preening, alerting, bill clattering and others show no significant differences between nestling stages.