Snow Goose

Anser caerulescens

The snow goose is a species of goose native to North America. Both white and dark morphs exist, the latter often known as blue goose. Its name derives from the typically white plumage. The species was previously placed in the genus Chen, but is now typically included in the "gray goose" genus Anser. Source

Where it is now

In the last 8 weeks this bird was recorded 169,201 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 16°C (typically 11 to 19°C, from 20 areas).

Over the weeks it was present in the past year, its centre in North America ranged from 38°N in February to 58°N in September, about 2,200 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.