Broad-tailed Hummingbird

Selasphorus platycercus

The broad-tailed hummingbird is a medium-sized hummingbird species found in highland regions from western United States and Western Canada to Mexico and Guatemala. Source

Where it is now

In the last 8 weeks this bird was recorded 170,185 times across 10 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 19°C (typically 15 to 30°C, from 11 areas). That range is wide, so temperature alone does not explain when it turns up.

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.