Western House Martin
Delichon urbicum
When to look
Records by month. January, 10,807 records. February, 23,236 records. March, 62,812 records. April, 221,775 records. May, 517,135 records. June, 329,760 records. July, 300,257 records. August, 299,688 records. September, 175,402 records. October, 35,537 records. November, 7,225 records. December, 6,153 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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