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“Planned obsolescence” in the plumage of larks
Larks (Alaudidae) present a heavily worn plumage for the most part of the annual cycle. Authors observed that lark feathers have unmelanized fringes and are prone to breakage. Larks may have turned...
Trade-off on shorebird eggshell colouration
In ground-nesting birds egg colour and appearance may have evolved due to opposite selection pressures. Pigmentation and spottiness make the eggs darker and have been suggested to improve...
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Content with tag camouflage .
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“Planned obsolescence” in the plumage of larks |
Trade-off on shorebird eggshell colouration |