Gull look-alikes
Larus
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Open the appSeveral birds can be mistaken for the Gull. Compare the key differences below to confirm your sighting.
Birds to compare
Herring Gull
Larus argentatus
Key differences
Often confused with Lesser Black-backed Gull. Herring Gulls have pink legs and a lighter grey mantle. Adults have a red spot on the lower mandible. Juveniles are complex but generally browner than LBBG juveniles.
Lesser Black-backed Gull
Larus fuscus
Key differences
Distinguished from Herring Gull by darker grey to black mantle, yellow legs, and often a more slender build. The red spot on the bill is typically less prominent than in Herring Gull.
Great Black-backed Gull
Larus marinus
Key differences
The largest gull species. Has a very dark, almost black mantle, pink legs, and a massive bill with a prominent red spot. Much larger and more robust than Herring or Lesser Black-backed Gulls.
Ring-billed Gull
Larus delawarensis
Key differences
Smaller than Herring Gull, with yellow legs and a yellow bill featuring a distinct black ring near the tip. Mantle is a medium grey. Common in North America.
California Gull
Larus californicus
Key differences
Similar in size to Ring-billed Gull but with darker grey mantle, greenish-yellow legs, and a yellow bill with a black ring and a red spot. Found primarily in western North America.
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