Western Marsh Harrier
Circus aeruginosus
When to look
Records by month. January, 129,557 records. February, 108,456 records. March, 156,903 records. April, 383,757 records. May, 355,646 records. June, 193,209 records. July, 182,350 records. August, 287,644 records. September, 307,603 records. October, 149,490 records. November, 109,977 records. December, 119,476 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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