White-throated Swift

Aeronautes saxatalis

The white-throated swift is a swift of the family Apodidae native to western North America, south to cordilleran western Honduras. Its coastal range extends as far north as Northern California, while inland it has migratory populations found throughout the Great Basin and Rocky Mountain regions, ranging as far north as southern British Columbia. White-throated swifts are found in open areas near cliffs, rock faces, or man-made structures, where they roost. Swifts are social birds, and groups are often seen roosting and foraging for flying insects together. Source

Where it is now

In the last 8 weeks this bird was recorded 431 times across 10 areas (each area is a 5 degree square).

See the White-throated Swift on the live map

Movement and weather

Each season it is first heard regularly where daytime highs are around 18°C (typically 15 to 23°C, from 6 areas).

Over the weeks it was present in the past year, its centre in North America ranged from 28°N in October to 42°N in June, about 1,600 km apart.

Arrival dates

The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.