论文部分内容阅读
鸟类是一个庞大的“家族”,全世界约计9000余种。鸟巢也千奇百怪,而与巢有关的鸟类行为,则反映出它们丰富多采的生物学和生态学特性。形形色色的鸟巢多数鸟儿在树枝上筑碗状的巢,家燕、金腰燕等在屋梁上做窝,这是大家看到过的。但也有不少例外。如楼燕、雨燕等,多在高楼和桥梁下筑巢。啄木鸟、林鸳鸯、树鸭等多在树洞中安家。啄木鸟是凿洞能手,每年都在树干上凿2—3个新洞,不过它自己只留一个做“产房”,用过的旧洞和多数新洞全让给别的小鸟小兽住了。翠鸟、戴胜、蜂虎等只在陡坡壁上打个土洞栖身。搏击长空的
Birds are a huge “family,” with more than 9,000 species worldwide. The nest is also strange, while the nest-related bird behavior reflects their rich and varied biological and ecological properties. Birds of all kinds Most birds in the branches to build bowl-shaped nests, swallows, Jin Yaoyan nest beam in the nest, which we have seen. But there are many exceptions. Such as Lou Yan, Swift, etc., mostly in tall buildings and bridges under the nest. Woodpecker, wood duck, duck and more in the tree hole home. Woodpecker is a burrowing hole in the trunk every year to dig 2-3 new holes, but it only has to do a “delivery room”, used the old hole and most of the new hole to let other small birds live . Kingfishers, Hoopoe, beehive and so on only in the steep slope wall to make a soil cave shelter. Fighting the sky