Birdr

Great Black-backed Gull vs Slaty-backed Gull

Larus marinus versus Larus schistisagus

Practice

Play a quiz with Great Black-backed Gull and Slaty-backed Gull

Great Black-backed Gull (Larus marinus) Great Black-backed Gull
Slaty-backed Gull (Larus schistisagus) Slaty-backed Gull

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Great Black-backed Gull · Slaty-backed Gull · My Tricky Birds