Crescent-chested Warbler

Oreothlypis superciliosa

The crescent-chested warbler is a small New World warbler. It is common throughout its montane range, from northern Mexico to northern Nicaragua, and is an occasional vagrant to Arizona and Texas. It shows an affinity for oaks. Source

Where it is now

In the last 8 weeks this bird was recorded 130 times across 6 areas (each area is a 5 degree square).

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Movement and weather

Over the weeks it was present in the past year, its centre in North America ranged from 13°N in May to 28°N in June, about 1,700 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.