ExploreBirds

Cassin's Vireo

Vireo cassinii

Cassin's Vireo is a small, cheerful bird with a lovely song. They have greenish-yellow feathers and love to hop around in trees, making them fun to spot while exploring nature.

Habitat: Forests

Appearance

The Cassin's Vireo has a distinctive gray head with prominent white 'spectacles' around its eyes. Its back is dull olive-green, fading to white on its belly, with subtle yellowish flanks. It also features two faint white wing bars.

KingdomAnimaliaPhylumChordataClassAvesOrderPasseriformesFamilyVireonidaeGenusVireo
Cassin's Vireo
feathered trait badgesocial trait badgesinging trait badgeinsectivorous trait badge
Cassin's Vireo

Category

Birds

Rarity

Common

Danger

1/5 · Very low

Snaps

Be the first to snap!

Interesting facts

Its song sounds like it's asking and answering questions! Wow!

Sometimes, it joins with other vireo species to make new hybrid birds!

Their nests are carefully woven with spider silk to keep them strong!

This tiny bird can hang upside down to snatch hidden insects from leaves!

Special abilities

Ability

Sound Surveyor

Cassin's Vireo can sing a distinct, questioning song that helps them communicate and define territory in dense forests.

Ability

Leafy Larder Hunter

Cassin's Vireo can expertly glean insects from dense foliage, thanks to its keen eyesight and agile movements.

Ability

Basket Weaver

Cassin's Vireo has specialized weaving skills, crafting a sturdy, cup-shaped nest suspended from tree branches.

Measurements & details

Length
12-15 cm
Wingspan
21-24 cm
Weight
0.01-0.014 kg
Lifespan
3-6 years
Top Speed
40 km/h
Clutch Size
3-5
Incubation
12-14 days
Migration Distance
3500 km

Diet & Feeding

This bird mostly munches on insects, keeping forest pests in check, and occasionally enjoys tasty berries.

Primary Foods

  • Caterpillars
  • Beetles
  • Spiders
  • Flies
  • Wild Berries

Foraging Method

  • Foraging

Ecological connections

parasitizes

Brown-headed Cowbird

Molothrus ater

Lays its eggs in the vireo's nest for the vireo to raise.

eaten by

Cooper's Hawk

Accipiter cooperii

A swift raptor that preys on small songbirds like the vireo.

shelters

Ponderosa Pine

Pinus ponderosa

Often nests and forages among the branches of mature pine trees.

eats

Western Tent Caterpillar

Malacosoma californicum

Feeds on these common caterpillars, helping control their populations.

Traits

Also known as

No aliases listed yet.

Collections

Safety

Danger

1/5 · Very low

Always watch birds from a distance and don't disturb their nests.

Frequently Asked Questions

How to identify Cassin's Vireo?

The easiest way to identify Cassin's Vireo is to use the Snappit nature identifier app.

How long is Cassin's Vireo?

12-15 cm

What is Cassin's Vireo's wingspan?

21-24 cm

How much does Cassin's Vireo weigh?

0.01-0.014 kg

How long does Cassin's Vireo live?

3-6 years

How fast can Cassin's Vireo move?

40 km/h

What does Cassin's Vireo eat?

This bird mostly munches on insects, keeping forest pests in check, and occasionally enjoys tasty berries.

Where is Cassin's Vireo usually found?

Forests

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