Heermann's Gull
Larus heermanni
When to look
Records by month. January, 28,472 records. February, 17,540 records. March, 12,223 records. April, 8,587 records. May, 8,238 records. June, 16,152 records. July, 41,023 records. August, 53,294 records. September, 55,680 records. October, 46,629 records. November, 34,261 records. December, 27,108 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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