Sexual dimorphism I

Sexual dimorphism I
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Aythya americana (Eyton) Redhead
Two males and a female (on the right).
Canada, Ontario, Burlington.
3/28/2015
AN040'02-150328020'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