摘要
在拉萨地区,白雌雄共同筑巢,巢的平均内径为7.87±1.65cm(n=4)、外径16.5±2.38cm(n=4)、巢高12.75±5.62cm(n=4)、巢深7.3±0.96cm(n=4)、平均离地高为0.35±0.64m(n=4)、巢重61.75±8.34g(n=4)。每窝产4～6枚卵,平均长径为21.3 ,短径为15.8 ,卵平均重2.3g。孵卵期为11～12天,双亲共同育雏,平均育雏期为15天,幼鸟离巢后仍靠亲鸟为生,雏鸟主要以鳞翅目的幼虫、蚯蚓、蜘蛛以及鞘翅目昆虫为食。
The white wagtail Motacilla alba alboides usually lives in the foot of mountains, plain grassland, which are close to the streams and on the riverbank in Lahsa. Both the male and female build the nest together. The average clutch size was 4-6 eggs. Weighing an average of egg 2.3g and measuring on average21.2±15.8 mm. The average incubation time was 11-12 days. Both the male and female were feeding the young and average nestling period was 15 days. The main food of the young wagtail is the juveniles of the lepidoptera, and the earthworms, spiders, the coleopteran insects and the hymenopdera insects.
