Connecticut Warbler illustration
Birdsong field guide

Connecticut Warbler

Oporornis agilis

The Connecticut Warbler is a large, secretive wood-warbler known for its distinct gray hood, complete white eye-ring, and elusive behavior in dense undergrowth. It is highly sought after by birders due to its habit of walking deliberately on the forest floor rather than flitting through the canopy.

What it sounds like

A loud, repetitive, and jerky three-syllable song often transcribed as 'beecher-beecher-beecher-beecher'.

Reference call, compare with what you heard
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Rec. Michael Collins · CanadaCC BY-NC-SAXeno-canto

Field notes

  • Despite its name, the species does not breed in Connecticut; it was named for a specimen collected there during its spring migration.
  • Unlike most wood-warblers that hop, this species walks along the ground with a slow, rhythmic gait similar to an Ovenbird.
  • It follows a 'loop migration' route, traveling north through the Mississippi Valley in spring and returning south along the Atlantic Coast in autumn.
  • The nest is exceptionally difficult to find, typically being a well-concealed cup built into mounds of sphagnum moss on the ground.
  • It is one of the latest spring migrants, often not reaching its northern breeding grounds until late May or early June.
Habitat
Boreal bogs, tamarack and spruce swamps, and moist deciduous forests with a dense, shrubby understory.
Range
Breeds across central Canada and the northern Great Lakes region; winters in the Amazon basin of central South America.
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