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FIELD GUIDE
Canada Warbler watercolor illustration
Cardellina canadensisLook a little closer.

New World Warblers

Canada Warbler

Cardellina canadensis

The Canada Warbler is a small, energetic songbird recognized by its distinctive 'necklace' of black streaks across a bright yellow chest. This migratory species travels thousands of miles between its breeding grounds in North America and its wintering habitat in South America. It is often among the last warblers to arrive in the spring and one of the first to depart in the fall.

migratory, insectivoroussmall songbirddistinctive songunderstory dweller
Meet the neighborhood
Length
12-15 cm
Wingspan
17-23 cm
Weight
9-13 g

Typical adult measurements.
Individuals and populations vary.

01 / The telltale details

You’ll know it
when you see it.

Start with shape and behavior. Then look for the smaller details.

  1. 01

    Black Necklace

    Adult males have a prominent band of sharp black streaks across a bright yellow breast; females have a fainter necklace.

  2. 02

    Eye-ring

    A bold white eye-ring contrasts with the blue-gray head.

  3. 03

    Upperparts

    The back and tail are a solid blue-gray, lacking wing-bars or tail spots.

  4. 04

    Underparts

    Throat, chest, and belly are bright yellow, with white undertail coverts.

02 / A place in the world

Where life
takes it.

Breeds in moist, shady forests with dense understory, often near water, including mixed conifer and deciduous forests, stream banks, and rhododendron thickets. During migration, it uses shrubby areas and forest edges. Wintering occurs in forested areas of foothills and mountains in South America.

Across the map

Home, near and far.

Breeds across Canada and the northeastern United States, extending south along the Appalachian Mountains to Georgia. It winters primarily in the Andes Mountains of northern South America, from Venezuela to Peru.

Through the seasons

Stay a while. Or follow the season.

A long-distance migrant, the Canada Warbler travels between its North American breeding grounds and South American wintering grounds. It is known for being one of the last warblers to arrive in spring and among the first to depart in fall.

03 / Listen a little closer

A voice
of its own.

The song begins with a sharp chip, followed by a rapid, clear, and warbling series of notes. They often sing late into the nesting period and sometimes during fall migration.

04 / The life behind the feathers

A day in its world.

On the menu.

Primarily insectivorous, consuming a variety of insects and spiders, such as mosquitoes, flies, beetles, moths, and caterpillars. Occasionally, it may also eat small berries during migration and on wintering grounds.

Forages actively by hopping between branches, gleaning insects from foliage, and catching flying insects mid-air, a technique known as hawking or flycatching. It also searches for food on the ground among fallen leaves.

A place to begin.

The female builds a bulky, cup-shaped nest on or near the ground, often in a depression formed by an upturned tree root, rotting stump, or moss clump. Nests are constructed from grass, leaves, plant down, moss, and bark, lined with finer materials. She lays 3-6 eggs, typically 4, and incubates them for about 10-12 days. Both parents feed the nestlings.

The little routines.

Often found in the understory, this species can be elusive but is not particularly shy. It may flick its wings and tail as it moves through branches. During migration, it may join mixed flocks with other bird species. Females may feign injury to distract predators from the nest.

One more reason to pay attention

A familiar face.
A few surprises.

  • The Canada Warbler is sometimes called the 'Necklaced Warbler' due to the distinctive black band across its chest.

  • It undertakes a long migratory journey, flying over 3,000 miles from its South American wintering grounds to its breeding areas.

  • The oldest recorded Canada Warbler lived to be at least 8 years old.

05 / An eye for the difference

Could it be
someone else?

Hooded Warbler

Setophaga citrina

Lacks the black necklace; males have a solid black hood surrounding a yellow face. Females have an olive hood.

Yellow-rumped Warbler

Yellow-rumped Warbler

Setophaga coronata

Has distinct white wing-bars and yellow patches on its sides and rump, which the Canada Warbler lacks.

AI-assisted species research. Prepared September 2026. Details can vary across regions and populations.

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