House Finch

Haemorhous mexicanus

The house finch is a North American bird in the finch family. It is native to Mexico and southwestern United States, but has since been introduced to the eastern part of North America and Hawaiʻi, and is found year-round in almost all parts of the United States and most of Mexico, with breeding grounds well into Canada as far north as northern Alberta. There are estimated to be 40 million house finches across North America, making it the second-most populous finch, just behind the American goldfinch. The house finch and the other two American rosefinches are placed in the genus Haemorhous. Source

Where it is now

In the last 8 weeks this bird was recorded 34,758,206 times across 69 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 10 to 27°C, from 13 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.