When do birds arrive in North America?

934 species have a seasonal record in North America (651 birds, 243 insects, 26 frogs and toads, 9 bats, 5 mammals). Each is listed under the month it typically arrived over the past year: the middle of its first-arrival weeks across the areas where it was recorded (each area is a 5 degree square). Southern areas usually see a species earlier than northern ones, so open a species to see the range.

Arriving around now

Species that arrived in October or November last year, most widespread first.

See them on the live map

Arriving in January 17

Arriving in February 29

Arriving in March 99

Arriving in April 195

Arriving in May 171

Arriving in June 138

Arriving in July 112

Arriving in August 87

Arriving in September 69

Arriving in October 15

Arriving in December 2

Other regions: Europe ยท South America ยท Africa ยท Asia ยท Oceania

Arrival dates come from automatic sound identification and open records, corrected for how much each area is watched. How this is measured.