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flight feather (鳥翼的)撥風羽。

flight formation

Only after stage 4 could additional feather variations evolve , including the many specializations we see at stage 5 , such as the asymmetrical vane of a flight feather 一旦演化到階段4之后,其他各種不同的羽毛才能夠演化出來,包括我們在階段5看到的各種特化羽毛,例如飛羽的不對稱羽片。

Unusual peacocks are the argus pheasant , with eyelike spots on its secondary flight feathers , and the white peacock , thought to be a mutation of the common peafowl 不尋常的孔雀是阿耳弋斯(百眼巨人)般的雉,在第二飛羽上擁有眼睛狀斑點,白孔雀,就被認為是普通孔雀的變種。

Although fossils clearly show flight feathers , their orientation ? critical to understanding their role in flight ? remains unclear 雖然化石明顯地顯示出了飛羽,但它們的方位? ?這對于理解它們在飛行中的作用至關重要? ?卻依然模糊不清。