天气预报 > 其他 > 鸟类用来保暖的是哪一种羽毛
鸟类用来保暖的是哪一种羽毛
更新时间: 2020-11-06 00:00:00  

鸟类用来保暖的是绒羽,也就是我们叫羽绒的鸭绒被、鸭绒衣,都是这种羽毛做的。

绒羽:

密生在正羽下面,羽支细长成丝状,着生于羽根的顶端。羽小支短,顶部簇生细丝状羽枝,羽小枝上无钩不具羽纤支或细钩,不能连成羽片,因此羽支蓬松成绒形。水禽绒羽比较发达,鸭绒就是这种羽毛。雏鸟破壳后体表所覆的绒羽叫雏绒羽,在早成雏中发达,而晚成雏中稀疏,甚至全无。雏绒羽完全不具羽小钩。

关键词: 鸟类 保暖 羽毛

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