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How Some Birds Can Change Their Colours Without Moulting
Автор: Maurice Baker
Загружено: 2018-04-14
Просмотров: 5082
Описание: Fresh Autumn is a term used to descried the colours of some bird, usually males, who after their autumn mould don’t look as bright and colourful as you would expect with a set of bran new feathers. The bright colours are there but obscured by dull fringes to the new feathers, the tips of the feathers are worn away gradually over the winter by a process of abrasion until by the spring the full breeding colours are exposed.
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