Sexual dimorphism I

Sexual dimorphism I
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Mergus merganser L. Common Merganser
A pair; male in nuptial plumage.
Polska, Mazowieckie, Warszawa.
3/28/2013
AE006\'04-130328059\'JJK
All from this album
Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I Sexual dimorphism I