Motmot

Black-legged Kittiwake vs Red-legged Kittiwake

Rissa tridactyla versus Rissa brevirostris

Play a quiz with Black-legged Kittiwake and Red-legged Kittiwake

Black-legged Kittiwake (Rissa tridactyla) Black-legged Kittiwake
Red-legged Kittiwake (Rissa brevirostris) Red-legged Kittiwake

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Black-legged Kittiwake · Red-legged Kittiwake · My Tricky Birds