Motmot

Common Tern vs Black-naped Tern

Sterna hirundo versus Sterna sumatrana

Practice

Play a quiz with Common Tern and Black-naped Tern

Common Tern (Sterna hirundo) Common Tern
Black-naped Tern (Sterna sumatrana) Black-naped Tern

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Common Tern · Black-naped Tern · My Tricky Birds