Tree Swallow
Tachycineta bicolor
When to look
Records by month. January, 146,663 records. February, 177,890 records. March, 482,046 records. April, 1,643,128 records. May, 2,647,697 records. June, 1,309,137 records. July, 709,017 records. August, 441,143 records. September, 260,597 records. October, 243,979 records. November, 107,149 records. December, 98,295 records.
Occurrence data from GBIF (incl. the eBird Observation Dataset, © Cornell Lab of Ornithology, CC BY 4.0). Descriptive, not predictive.
Photograph one yourself?
Plumage names the birds in your camera roll, keeps the list on your phone, and shows you which species you are still missing. Free to start.