Vaux's Swift

Chaetura vauxi

Vaux's swift is a small swift native to North America, Central America, and northern South America. It was named for the American scientist William Sansom Vaux. Source

Where it is now

In the last 8 weeks this bird was recorded 60,635 times across 14 areas (each area is a 5 degree square).

See the Vaux's Swift on the live map

Movement and weather

Each season it is first heard regularly where daytime highs are around 19°C (typically 16 to 25°C, from 7 areas).

Over the weeks it was present in the past year, its centre in North America ranged from 17°N in March to 41°N in April, about 2,700 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.