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What does the action of dinosaurian feather have?
From;  Author:Stand originally
The dinosaur that take wool cannot fly, so the function of feather is not at first fly and may be an action of adiabatic heat preservation, when progenitive and seasonal courtship display effect, action of other perhaps what, the use that just conquered just be gone up to fly by avian clique in the process of blue sky later. Now, avian feather still holds the double action of heat preservation and flight concurrently.