Eastern Gray Squirrel

Sciurus carolinensis

The eastern gray squirrel, spelled as grey squirrel outside of the United States, is a species of tree squirrel in the genus Sciurus. It is native to eastern North America, where it is the most prodigious and ecologically essential natural forest regenerator. Widely introduced to certain places around the world, the eastern gray squirrel in Europe, in particular, is regarded as an invasive species. Source

Where is the Eastern Gray Squirrel now?

In the last 8 weeks it was recorded 195,241 times across 51 areas (each area is a 5 degree square).

See the Eastern Gray Squirrel on the live map

How the Eastern Gray Squirrel moves through the year

Over the weeks it was present in the past year, its centre in North America ranged from 31°N in April to 39°N in June, about 900 km apart.

When does the Eastern Gray Squirrel arrive?

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.

Download every area as CSV · Review these arrival dates (researchers, ORCID sign-in)

Arriving at the same time in North America

• Dark-eyed Junco Junco hyemalis
• Common Loon Gavia immer
• Golden-Crowned Kinglet Regulus satrapa
• Swamp Sparrow Melospiza georgiana
• Greater White-fronted Goose Anser albifrons
• Winter Wren Troglodytes hiemalis
• American Tree Sparrow Spizelloides arborea
• Tundra Swan Cygnus columbianus

Every arrival in North America, month by month

Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured · How it compares with human observers