Birdr

Slender-billed Gull vs Bonaparte's Gull

Chroicocephalus genei versus Chroicocephalus philadelphia

Practice

Play a quiz with Slender-billed Gull and Bonaparte's Gull

Slender-billed Gull (Chroicocephalus genei) Slender-billed Gull
Bonaparte's Gull (Chroicocephalus philadelphia) Bonaparte's Gull

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Slender-billed Gull · Bonaparte's Gull · My Tricky Birds