【摘要】 20 0 4年3～1 0月对南充地区家燕(Hirundorustica)的繁殖生态进行了观察,研究了雏鸟生长发育模式。结果表明,家燕2月中旬迁来,9月中旬迁飞。一般年产卵2窝。4月初已见产卵,卵长径(1 9 1 8±0 90 )mm ,短径(1 4 1 8±0 41 )mm ,卵重(2 5 7±0 3 8)g。孵卵期(1 6±1 )d ,育雏期2 2～2 3d。雏鸟体长及外部器官的形态学参数可以用Logistic曲线方程很好地拟合,体长、翅长及1 3日龄前的体重增长曲线均呈“S”型。更多还原

【Abstract】 From March to October of 2004, observations on the breeding ecology, the growth and development of Hirundo rustica were conducted in Nanchong, Sichuan Province of China. Based on field watch, characteristics of the nestlings were studied. The results were as following:H. rustica immigrates to Nanchong in February and emigrates from Nanchong in December. H. rustica usually produces two broods annually. Eggs are laid in early April. The average weight of eggs is 2.57±0.38 g, with egg length 19.18±0.90 mm and the breadth 14.18±0.41 mm. The average incubation period is 16±1 days. The length of nursing period is about 22-23 days. The growth of the body mass, the wing length and some other morphological characters of the fledgling can well be modeled by the Logistic equation. The growing curves of the wing length, the body length of nestling and the weight before 13-day-old nestling are “S” model.更多还原