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鸟类是身披羽毛的动物,也是鸟类与其他动物的主要区别。羽毛的种类鸟类是所有动物中唯一拥有羽毛的。鸟儿羽毛的成分跟你头发的成分其实是一样的,它们都含有大量的角质蛋白。对于很多鸟儿来说,它们全身的羽毛重量超过了骨骼的重量,而一只鸟可能会长出多达2.5万根羽毛。这么多的羽毛都不一样,不同位置生长的羽毛有不同的形态,作用也不同。绒羽紧贴着皮肤,它不仅给皮肤制造了一个保温层,并且还能够缓冲和保护鸟类身体;廓羽
Birds are feathered animals, but also the main difference between birds and other animals. Types of feathers Birds are the only ones in all animals to have feathers. The composition of the bird feathers is actually the same as the composition of your hair, they all contain a lot of keratin. For many birds, the weight of their entire body exceeds the weight of their bones, and a bird may grow up to 25,000 feathers. So many feathers are not the same, different locations have different forms of feathers, the role is also different. Feather plume close to the skin, it not only creates a layer of insulation for the skin, but also to buffer and protect the body of birds; profile feather