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Feather
The positive feather is constitute by the feather quill and two feather slice of the sideses, the lower part of the feather quill does not have the part of the feather slice to be called the feather handle or feather roots.Thorough skin of the feather handle inside.The feather slice and the feather handles hand over the boundary to reply to face a bore to be called up the , top next living not whole small feathers of the tuft growth, be called the vice- feather.The feather quill upper part from up the above part of is called the feather stem, its two sides is feather slice.The feather slice have a series are inclined to arrange of the parallel feather composing, the feather is up again inclined to living the small of parallel feather.The feather small of the near row has the convex good luck, the far row has the small hook of feather.The small hook of feather hooks the stanza feather to arrange mutually tidy, is the feather slice is tight.The bird usually combs the feather is to let small of feather re- hooked match.
The feather of the originality birds may wear to living in the body form evenly, some categories,such as penguin, ostrich, of now, call duck and the rat bird purpose bird also is such.But the feather of the great majority birds wear to living the certain district in the body form, is be called the feather area, of each feather area does not wear the feathery place to is called the naked area.
The ⑴ flies the feather:The wing area good luck wears to living of a tough and resilient strong feather of row, firmly" anchor man settle" is in the skeleton good luck.While flap wings to rise whole wield, clap the shot air.Number and appearances that fly the feather are the importance of the birds classification according to.
The ⑵ replies the feather:The wing, the tail feather of the bird carry on the back the stomach face reply the tile form of shorter feather, is the wing surface to become streamlined, be advantageous to let up to fly the medium resistance.
Positive feather of ⑶ :The main feather of the overlay birds body form, fly the feather and the tail featherses are all positive feather that especially turns
The feather of ⑷ :The livings under the positive feather of become the bird, small of feather up not have the feather hook or imperfections, feather stem shortness or imperfection, the feather makes into the from the feather handle coping to stretch out, making the whole feather fluffy soft, is the body watch to separate the hot layer effectively.
The feather ⑸ :The cheeper breaks the feather of that the hull body form reply, flourishing in early become, but the night become in sparse, even all have no.The feather does not have the small hook of feather completely.
Half feather of ⑹ :Lie in the feather with kind of feather between positive feather, have the structure of the positive feather but lack the small hook of feather as fluffy as convex good luck, so be like the feather .Be distribute in the positive feather generally under.
The ⑺ hair feather or feather:Spread between the positive feather and feather, the feather stem is thin long, the top has the few feather and feathers the small.The basic function of the hair feather is a touch.The feather of the bird is light but bear to whet, is a hot non-conductor.The birds often add to take a bath to the feather, trembling the dust between feathers, counteracting the mouth to comb whole, the grease daubery whole body feather that the tail fat gland secrete.The feather is slender, pliant and tough and keeps warm, is to make to do.The feather take, best material that handicraft product decorate.
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