Motmot

Slender-billed Gull vs Black-headed Gull

Chroicocephalus genei versus Chroicocephalus ridibundus

Practice

Play a quiz with Slender-billed Gull and Black-headed Gull

Slender-billed Gull (Chroicocephalus genei) Slender-billed Gull
Black-headed Gull (Chroicocephalus ridibundus) Black-headed Gull

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Slender-billed Gull · Black-headed Gull · My Tricky Birds