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3 is dark grey, giving an easy method of distinguishing the sexes in eclipse. All young birds at first resemble the female _ the tail is only about half length for the first month of plumage - but the males progressively
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Document Date: 2012-05-28 16:54:20
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3 is dark grey, giving an easy method of distinguishing the sexes in eclipse. All young birds at first resemble the female _ the tail is only about half length for the first month of plumage - but the males progressively