Eastern Wood-Pewee

Contopus virens

The eastern wood pewee is a small tyrant flycatcher from North, Central and South America. This bird and the western wood pewee were formerly considered a single species. The two species are virtually identical in appearance, and can be distinguished most easily by their calls. Source

Where it is now

In the last 8 weeks this bird was recorded 1,478,904 times across 48 areas (each area is a 5 degree square).

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Movement and weather

Each season it is first heard regularly where daytime highs are around 24°C (typically 19 to 29°C, from 34 areas).

Over the weeks it was present in the past year, its centre in North America ranged from 18°N in April to 43°N in August, 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.