Wildlife Clinic

Species

Golden mouse

Ochrotomys nuttalli

A golden-orange, tree-living mouse that builds round nests in vines and shrubs.

A golden mouse walking along a thin stem among leaves at night, its coat a bright golden orange.

Photo Dan Vickers (opens in a new tab) / iNaturalist, CC BY 4.0 (opens in a new tab)

At a glance

Size
Body about 8 to 10 cm; tail about 7 to 9 cm
Weight
About 15 to 25 g
Habitat
Forests and thickets with dense vines, especially greenbrier and honeysuckle
Diet
Seeds of sumac, greenbrier, cherry and other plants, plus insects
Active
Night
Shelter
Round nests of shredded bark and leaves in vines and shrubs, from ground level to several metres up
Lifespan
Usually a year or two
Rabies vector
No

Identification

Key marks
Rich golden-orange to cinnamon fur; creamy white belly; large dark eyes; tail about as long as the body
Told apart from
White-footed and cotton mice, which are brown rather than golden
Where to look
Vine tangles and thickets in woods across Georgia; its ball-shaped nests in greenbrier and honeysuckle

Behaviour

Golden mice are the most tree-living mice of the Southeast. They climb through vines and shrubs, using their tail to help them balance, and build round nests of shredded bark, leaves and grass in tangles of greenbrier, honeysuckle and grape.

They also build small feeding platforms where they eat seeds, leaving piles of husks. Several golden mice may share a nest, and they are generally calm and gentle.

Why they matter

Golden mice are a sign of the dense, vine-rich thickets of southern forests, and they eat and spread the seeds of many shrubs and vines.

They are also a food for owls, snakes, foxes and other predators, and a reminder that the tangled edges people often clear are home to their own wildlife.

Reproduction and lifecycle

Breeding — spring and autumn, less in midsummer
Gestation — about four weeks
Litter — usually two or three young
Eyes open — at about two weeks old
Weaning — at about three weeks old
Lifespan — usually a year or two in the wild

Living around people

  • Clearing vine tangles and thickets removes their nests and food.
  • Leaving some greenbrier and honeysuckle at woodland edges keeps their habitat.
  • Like other wild rodents, they can carry diseases; avoid handling them.

Misconceptions

  • Mice live on the ground. Golden mice live mostly in vines and shrubs.
  • Vine tangles are useless. They are home and food for golden mice and many birds.

Related species

Seasonal activity

When this species is breeding, and when there are nests on the ground. Mowing during the shaded months is how most nests are found.

Breeding and active nests by month for this species
JanFebMarAprMayJunJulAugSepOctNovDec
BreedingJan: noFeb: noMar: noApr: noMay: noJun: noJul: noAug: noSep: noOct: noNov: noDec: no
Active nestsJan: noFeb: noMar: noApr: noMay: noJun: noJul: noAug: noSep: noOct: noNov: noDec: no
NotesSeveral may share a nest for warmthActive on stored seedsBreeding beginsLitters born in vine nestsBreeding continuesBreeding slows in summer heatActiveBreeding resumesAutumn littersFeeding on ripening seeds and fruitActiveShared nests in cold weather

Where it lives

Recorded in 16 states and provinces. Each one links to the other animals there, and to the rehabilitators licensed for them.

If you found one

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