Heermann's Gull

Larus heermanni

When to look

Reported most in September, across 477K open records.

JFMAMJJASOND

Occurrence data from GBIF (incl. the eBird Observation Dataset, © Cornell Lab of Ornithology, CC BY 4.0). Descriptive, not predictive.

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Every species with photos is in the field guide index.