Individual variability
Examples of individual variability within the same species of animals and plants.
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Calidris pugnax
Ruff
Male in nuptial plumage.
Polska, Podlaskie, Grądy Wonieckie.
4/12/2014
AE035'04-140412007'JJK
Male's nuptial plumage is individualised to such degree that two identical birds have been never found.