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Side-by-Side Comparison

Attribute	American Robin	Mountain Bluebird
Scientific Name	Turdus migratorius	Sialia currucoides
Order	Passeriformes	Passeriformes
Family	Turdidae	Turdidae
Conservation Status	Least Concern	Least Concern
Length	25.0 cm (9.8 in)	—
Wingspan	36.0 cm (14.2 in)	22.8 cm (9.0 in)
Weight	77.0 g (2.72 oz)	30.075 g (1.06 oz)
Diet	Earthworms, insects, and fruit. Famously hunts earthworms on lawns by running, stopping, and tilting its …	--
Clutch Size	2-4	5-6
Population Trend	—	—

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Size Comparison

Body Length

American Robin 25.0 cm

Mountain Bluebird —

Wingspan

American Robin 36.0 cm

Mountain Bluebird 22.8 cm

Weight

American Robin 77.0 g

Mountain Bluebird 30.075 g

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Habitat Comparison

Shared Habitats

🌾 Grassland

American Robin only

🌲 Forest 🌿 Wetland

Mountain Bluebird only

None

American Robin

Lawns, parks, gardens, farmland, and forest edges. One of the most familiar birds in suburban North America.

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Song & Call Comparison

American Robin

Song

A clear, caroling song of 2-3 note phrases: 'cheerily, cheer-up, cheerio'. Sings from dawn perches. Sharp 'tut-tut-tut' alarm call and thin 'seeee' flight note.

Mountain Bluebird

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Geographic Range & Migration

American Robin

North America from Alaska and Canada to Mexico. Northern populations migrate south in winter; southern populations are largely resident.

Mountain Bluebird

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Conservation Status

Least Concern

American Robin

Least Concern

Mountain Bluebird

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How to Tell Them Apart

American Robin

Plumage

Dark grey-brown upperparts with a warm brick-red breast and belly. White eye-ring and streaked white throat. Female slightly paler.

Bill

Bright yellow bill with a dark tip

Mountain Bluebird

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About These Birds

American Robin

The American robin is widely regarded as a harbinger of spring across North America. Despite its name, it is a true thrush unrelated to the European robin. American robins produce two to three broods per year and are among the earliest birds to sing in the morning chorus.

Mountain Bluebird

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Related Comparisons

American Robin vs Common Blackbird

same-family

American Robin vs Eastern Bluebird

same-family

American Robin vs Hoopoe

look-alike

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