Wildlife Clinic

Species

Mourning warbler

Geothlypis philadelphia

A grey-hooded warbler with a black 'crepe' bib, a skulking migrant in Georgia's thickets.

A male mourning warbler perched on a bramble stem, with a blue-grey hood, a black patch on the breast, an olive back and bright yellow underparts.

Photo kirk gardner (opens in a new tab) / iNaturalist, CC BY 4.0 (opens in a new tab)

At a glance

Size
About 12 to 14 cm long
Weight
About 11 to 15 g
Habitat
Dense thickets on migration
Diet
Insects
In Georgia
A rare migrant
Voice
A rich, rolling song
Rabies vector
No

Identification

Key marks
Grey hood; black bib in males; olive back; yellow underparts; no bold eye-ring
Told apart from
Connecticut warbler, which has a complete white eye-ring
Where to look
Dense thickets in May and September

Behaviour

Mourning warblers stay low in dense shrubs and are more often heard than seen.

Why they matter

The black bib of the male reminded early naturalists of mourning clothes, giving the bird its name. It depends on thickets for nesting and migration.

Reproduction and lifecycle

Nest — A cup on or near the ground
Eggs — Usually three or four
Incubation — About 12 days
Chicks — Fed by both parents
Lifespan — Several years

Living around people

  • Thickets are important on migration.

Misconceptions

  • Grey-hooded warblers are all the same. Mourning and Connecticut warblers are told apart by the eye-ring.

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
NotesIn Central and South AmericaIn the tropicsIn the tropicsIn the tropicsMigrantsNesting in the northNestingMigratingMigrantsLast migrantsIn the tropicsIn the tropics

Where it lives

Recorded in 55 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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