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Montana Field Guide

Montana Field Guides

Eastern Gray Squirrel - Sciurus carolinensis

Non-native Species

Global Rank: G5
State Rank: SNA
(see State Rank Reason below)

Agency Status


External Links

Listen to an Audio Sample
Copyright Jeff Rice and the Western Soundscape Archive at the University of Utah. Audio file courtesy of the Acoustic Atlas at Montana State University (
State Rank Reason (see State Rank above)
Species is nonnative/ introduced
General Description
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Species Range
Montana Range Range Descriptions


Western Hemisphere Range


Observations in Montana Natural Heritage Program Database
Number of Observations: 30

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)


Native to eastern broad-leafed deciduous forests, thrives in Climax Forest.

Food Habits
Will store (cache or hoard) food.

Quite arboreal. Intraspecific intolerance in vicinity of nest, but tolerant while foraging.

Reproductive Characteristics
Breeding season from late December to the following September. Includes 2 peaks (January to February and May to June). Young born February to April and late June to August. Some females produce 0 to 1 litters per year. Altricial young.

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Citation for data on this website:
Eastern Gray Squirrel — Sciurus carolinensis.  Montana Field Guide.  .  Retrieved on , from