TREE SQUIRRELS · SPECIES PROFILE

Douglas Squirrel

Tamiasciurus douglasii

Least Concern
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Body length19–23 cm (7.5–9 in)
Tail length9–15 cm (3.5–6 in)
Weight200–300 g
Fur colorGray-brown to reddish-brown
Breeding seasonLate winter to early spring
Gestation~35 days
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Classification

KingdomAnimalia
PhylumChordata
ClassMammalia
OrderRodentia
FamilySciuridae
GenusTamiasciurus
SpeciesTamiasciurus douglasii
NATIVE RANGE

Where it is found

Douglas's Squirrel is native to western North America.

Its range includes:

The species is strongly associated with Pacific coastal forests.

British Columbia (Canada)
Washington
Oregon
Northern and central California
Western Nevada
HABITAT

Where it lives

Douglas's Squirrels inhabit coniferous forest ecosystems.

Typical habitats include:

They are especially common in forests dominated by Douglas-fir trees, from which their name is derived.

Coastal conifer forests
Douglas-fir forests
Pine forests
Mixed evergreen woodlands
RANGE & HABITAT CONTEXT

Compare form, setting and structure

Related tree squirrels help break up the reference while showing how habitat, body form and movement can vary across the broader group.

Southern Amazon Red Squirrel — related tree squirrel visual context
RELATED TREE SQUIRRELSouthern Amazon Red SquirrelSciurus spadiceus — related group reference for visual comparison; not Douglas Squirrel.(c) Pedro Henrique Maloso Ramos, some rights reserved (CC BY) · CC-BY · VIEW SOURCE ↗
Guayaquil Squirrel — related tree squirrel visual context
RELATED TREE SQUIRRELGuayaquil SquirrelSciurus stramineus — related group reference for visual comparison; not Douglas Squirrel.(c) maferrojrod, some rights reserved (CC BY-NC) · CC-BY-NC · VIEW SOURCE ↗
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Nest & Shelter

Douglas's Squirrels build nests known as dreys in trees.

Typical nest characteristics include:

They may also use:

Constructed from twigs, moss, leaves, and bark fibers
Located in tree branches or forks
Often built high in conifer trees
Used for resting, shelter, and raising young
Tree cavities
Abandoned woodpecker holes
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Physical Profile

Body length19–23 cm (7.5–9 in)
Tail length9–15 cm (3.5–6 in)
Weight200–300 g
Fur colorGray-brown to reddish-brown
BellyWhite or pale gray
TailBushy with darker edging

This species closely resembles the American Red Squirrel, but occurs farther west.

BEHAVIOR & FORAGING CONTEXT

Keep behavior connected to the animal

These are related tree squirrels, not photographs of Douglas Squirrel. Use them as visual context for locomotion, posture, feeding and environmental use.

Yucatán Red Squirrel — related tree squirrel visual context
RELATED TREE SQUIRRELYucatán Red SquirrelSciurus yucatanensis — related group reference for visual comparison; not Douglas Squirrel.(c) Glynn Morris, some rights reserved (CC BY) · CC-BY · VIEW SOURCE ↗
Brooke's Squirrel — related tree squirrel visual context
RELATED TREE SQUIRRELBrooke's SquirrelSundasciurus brookei — related group reference for visual comparison; not Douglas Squirrel.(c) Royle Safaris, some rights reserved (CC BY-NC) · CC-BY-NC · VIEW SOURCE ↗
BEHAVIOR

How it behaves

Douglas's Squirrels are diurnal and highly territorial.

Typical behaviors include:

They are one of the most vocal squirrels in North American forests.

Loud chatter and warning calls
Defense of food storage sites
Rapid climbing and jumping through trees
Aggressive territorial displays
DIET

What it eats

Douglas's Squirrels primarily feed on seeds and nuts, especially those from conifer trees.

Common foods include:

They store large numbers of cones in food caches called middens.

Pine cones
Douglas-fir seeds
Spruce seeds
Nuts
Mushrooms
Berries
Tree buds
Occasionally insects
GROUP DIVERSITY

See the wider group around this species

Squirrels in the same broad group can look and live very differently. These credited references provide comparison without changing the facts for Douglas Squirrel.

Bornean Mountain Squirrel — related tree squirrel visual context
RELATED TREE SQUIRRELBornean Mountain SquirrelSundasciurus everetti — related group reference for visual comparison; not Douglas Squirrel.(c) stefanie_de_win, some rights reserved (CC BY-NC) · CC-BY-NC · VIEW SOURCE ↗
Horse-tailed Squirrel — related tree squirrel visual context
RELATED TREE SQUIRRELHorse-tailed SquirrelSundasciurus hippurus — related group reference for visual comparison; not Douglas Squirrel.(c) lunarjade, some rights reserved (CC BY-NC) · CC-BY-NC · VIEW SOURCE ↗
REPRODUCTION

Breeding & Young

Breeding seasonLate winter to early spring
Gestation~35 days
Litter size3–6 young

Young squirrels are raised in tree nests or cavities.

LIFESPAN

Longevity

Unknown

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Conservation

STATUS Least Concern

IUCN Status: Least Concern

The species remains widespread and common across the forests of the Pacific Northwest.