Heermann's Gull
Larus heermanni
When to look
Records by month. January, 37,317 records. February, 25,077 records. March, 16,453 records. April, 10,631 records. May, 11,640 records. June, 19,824 records. July, 52,673 records. August, 72,327 records. September, 86,610 records. October, 67,361 records. November, 43,575 records. December, 33,390 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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