摘要
白骨顶是乌梁素海的夏候鸟,其数量当推该期游禽的首位。每年3月初迁来,11月初离开。繁殖期从4月延续到7月。该鸟营巢于苇地,两性以苇茎叶或蒲叶编织碗状巢。日产一枚卵圆形、灰白色杂以棕色斑点的卵。窝卵数5～12枚。卵平均测量:卵径53×36mm;重378。孵化率95.8％。本文还研究了该鸟体重和翅长,体重和尾脂腺,体重和嘴峰的相关关系,并以数学公式进行模拟。
The coot (Fulica atra) is one of the most common summer birds in Wuliangsuhai region of Nei Mongol. They are appeared on Wuliangsuhai from about the beginning of March, leave in the end of October to beng of November. The breeding activities of the coot inhabiting Wuliangsuhai start in the beginning of aprill. Their cling period ends at the end of June or at the beginning of July. The coot nests in reed swamp. Their nests are built of the reedstems and cattail-stems, lined with the reed-leaves or cattail-leaves. The nest is constructed by both sexes. It is bowl-shaped. The eggs of the coot average 37(29～44) gm in weight and 53(45～55)×36(34～38) mm in measurements. During the period of egg-laying, an egg is laid every day. The eggs are oval in shape, greyish white in color, specked with red-brown. The number of eggs (5 clutches) of every clutch is 5～12. Incubation of eggs lasts for about 21～23 days. The percentage of hatching average (6 clutches)95.8%. This paper also deals with the relationships between weight and length of the wing or the urophygeal gland and are simulated bv mathematical formulae.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
1989年第4期521-522,共2页
Journal of Inner Mongolia University：Natural Science Edition
关键词
白骨顶
夏候鸟
繁殖
生态
Breeding ecology
Natatorial bird
Coot, Fulica atra
Wuliangsuhai
Nei Mongol
