喜鹊雏鸟的生长发育和体温调节能力

1996年4月至7月，在吉林省向海自然保护区的沙丘榆林稀疏灌丛中对喜鹊（Pica pica sericea)雏鸟的生长发育及体温调节能力进行了研究。结果发现：喜鹊雏鸟在出飞前23日龄内与乞食行为有关的外部器官指标，如体质量、体长、跗跖长和嘴峰长等的发育较为迅速，增长曲线为“S”型，而与飞翔行为有关的外部器官指标，如翅长、尾羽长则发育较为缓慢，增长曲线为近似直线；喜鹊雏鸟到19日龄时体温调节能力发育完善。根据测定结果，喜鹊雏鸟的生长发育过程分为三个阶段。

The Magpie Nestling' s Growth Development and Thermoregulatory Capacity

In this paper, the authors report the magpies growth development and thermoregulatory capacity as well as the shape and behavior characteristics of magpie's nestlings in Xianghai natural reserve, Jilin province, they determined nestling's (includes 10 nests 62 nestlings) growth development course of body weight, body length, wing length, tarsometatarsus length, culmen length, rectrices length and temperature. They also found that magpie nestling' s exterior organ concerned with beg eclipse behavior grew faster than its exterior organ concerned with wing behavior; body weight, wing length, tar-sometatarsus length, culmen length and trunk long conform with Logistic curvilinear equation. The formula for its weight growth is W = 191.64/(1 + e -0.3240(t-9.26)).Thermoregulatory capacity is not completely developed until the nestlings are 19 -day old. According to the determination results magpie Juvenal growth development is divided into three steps.