Birdr

Red-throated Diver vs Black-throated Diver

Gavia stellata versus Gavia arctica

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Play a quiz with Red-throated Diver and Black-throated Diver

Red-throated Diver (Gavia stellata) Red-throated Diver
Black-throated Diver (Gavia arctica) Black-throated Diver

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Red-throated Diver · Black-throated Diver · My Tricky Birds