Feather types include filamentous feather, clusters of plumulaceous feathers and pennaceous feathers.
羽毛类型包括丝状羽、簇状绒羽和正羽。
Feathers can have a pennaceous vane and a plumulaceous base.
单一支羽毛也可以由顶端为正羽，基部为绒羽组合而成。
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