Black-chinned Hummingbird

Archilochus alexandri

The black-chinned hummingbird is a hummingbird occupying a broad range of habitats from deserts to mountain forests and urban areas in the western United States, southern British Columbia, and Mexico. It is migratory, wintering as far south as Mexico. In sunlight, an iridescent purple gorget forming a ring below the black chin feathers is a male characteristic. When in flight and hovering, its wings make a low-pitched humming sound. Source

Where it is now

In the last 8 weeks this bird was recorded 219,906 times across 20 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 22°C (typically 17 to 26°C, from 14 areas).

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.