江西吉安灰头麦鸡的繁殖生态研究

灰头麦鸡Vanellus cinereus在江西吉安地区是夏候鸟.2010 ～2011年对当地灰头麦鸡的繁殖生态进行了调查研究.结果表明,当地灰头麦鸡最早2月20日迁入,最晚9月17日迁离,居留时间约为7个月;3月初开始产卵,平均窝卵数3.8枚(n=14),平均卵大小48.0 mm×34.5 mm,平均卵重28.8 g(n =38);产满窝卵后即开始孵卵,孵卵由雌雄鸟共同承担;孵卵期为28 ～31 d;孵化率为90.15％.

Breeding Ecology of Vanellus cinereus in Ji’an,Jiangxi Province

The grey-headed lapwing Vanellus cinereus is a summer resident in Ji’an,Jiangxi province.The breeding ecology of grey-headed lapwings was investigated in Ji’an from 2010 to 2011.This species migrated into the area on February 20 at the earliest time,and left on September 17 at the longest duration.Residence duration was about seven months.The egg-laying started in early March.The clutch size was 3.8(n=14),with eggs having the average volume index of 48.0 mm×34.5 mm and weight of 28.8 g(n=38).Parent birds began to incubate after all eggs of a clutch were laid.The incubating behavior was observed in both sexes.Incubation period lasted 28 to 31 days and the hatchability was 90.15%.