Heermann's Gull
Larus heermanni
When to look
Records by month. January, 37,344 records. February, 25,093 records. March, 16,467 records. April, 10,648 records. May, 11,657 records. June, 19,873 records. July, 52,734 records. August, 72,481 records. September, 86,744 records. October, 67,382 records. November, 43,594 records. December, 33,406 records.
Occurrence data from GBIF (incl. the eBird Observation Dataset, © Cornell Lab of Ornithology, CC BY 4.0). Descriptive, not predictive.
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