鸡形目,雉科
体长:22~34厘米;体重:240~320克
中国特有鸟种,是小型鸡类。它们以植物和昆虫为食,食性杂,每晚成群栖于竹林或树枝上,平时结成十几只的小群,冬季结成的群体会比较大。它们在地面做窝,只垫些枯草叶,每年大约能繁殖2窝,每窝产蛋10枚左右,孵化17~18天,雏鸟出壳一周就能飞行,属于早成鸟。20世纪60年代前,它们的数量很多,但由于农药污染和滥捕滥猎,20世纪末在野外几乎绝迹了。近几年随着生态环境的变好,树多了,山绿了,它们的身影也随处可见。在野外只要听见“地主婆、地主婆”的连续鸣叫,不是它们是谁?
Bambusicola thoracica is Galliformes of small size,peculiar to China.They are omnivorous,feeding on a variety of plants,insects and crops,and perch in bamboo groves or on branches in flocks.They lay nearly 10 eggs every time in their nest built on ground,spending 17-18 days to incubate.
知识链接
鸠鸽科Columbidae(www.xing528.com)
多为中型鸟类,身体较胖,善飞行,爱集群活动。鸠鸽科是鸟类中的“哺乳动物”,雌鸽的喉部嗉囊能分泌“乳汁”——鸽乳,雄鸽同样有此本领,这可是任何雄性哺乳动物都做不到的。雌雄配对后总是成双活动,还不时互相“接吻”。“接吻”时雌鸽可以从雄鸽口中取食鸽乳,以利于产蛋。雌鸽每窝只产2枚蛋,需15~18天孵化,孵化由雌雄共同分担。雌雄亲鸟用鸽乳喂饲幼雏,鸽乳营养丰富,含脂肪25%,蛋白质15%,不含糖类,所以鸠鸽科幼鸟的成活率很高。
家鸽是原鸽经人类几千年选育形成的一个品种群,可用于通信、产蛋、肉食、表演或观赏。用于通信的信鸽能从几千公里外返回鸽巢。每年各地的信鸽协会都会组织比赛,能从上千公里远处最快返巢的冠军信鸽是主人的骄傲。鸽子是一种温和善良的鸟儿,不爱打斗,所以人们把衔着橄榄枝的白鸽作为和平的象征。
Columbidae refers to birds that are somewhat fat and of medium size.They are good at flying and usually flock together.Parent birds feed nestlings with pigeon’s milk,which is partly why the survival rate of Columbidae birds exceeds that of other birds.Among Columbidae is the domestic pigeon.Through selecting and breeding over thousands of years,domestic pigeons are utilized for communication,performance,enjoyment or just for their meat.Besides,pigeons with an olive branch in their beaks are considered a symbol of peace.
山斑鸠
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