Wildlife Clinic

Species

Tennessee warbler

Leiothlypis peregrina

A plain, olive warbler of the Canadian forests that passes through Georgia in migration.

A Tennessee warbler perched in apple blossom, with a grey head, a white eyebrow and dark eye-line, a bright olive-green back and white underparts.

Photo Cephas (opens in a new tab) / Wikimedia Commons, CC BY-SA 4.0 (opens in a new tab)

At a glance

Size
About 12 cm long
Weight
About 8 to 17 g
Habitat
Treetops on migration
Diet
Insects, especially spruce budworm, and nectar
In Georgia
An uncommon spring and common autumn migrant
Voice
A loud, three-part chattering song
Rabies vector
No

Identification

Key marks
Olive-green back; grey head in spring males; white eyebrow; plain underparts
Told apart from
Red-eyed vireo, which has a thicker bill
Told apart from
Orange-crowned warbler, which is duller with yellow under the tail
Where to look
Treetops during migration

Behaviour

Tennessee warblers feed on insects and nectar in treetops, often with other migrants.

Why they matter

Tennessee warblers increase dramatically during outbreaks of spruce budworm, a forest pest in Canada, making them important natural controls.

Reproduction and lifecycle

Nest — A cup on the ground in boreal forest
Eggs — Usually four to seven
Incubation — About 11 to 12 days
Chicks — Fed by both parents
Lifespan — Several years

Living around people

  • Window strikes are common on migration.

Misconceptions

  • It lives in Tennessee. It was first described from a migrant there; it nests in Canada.

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 tropicsMigrating northMigrantsNesting in CanadaNestingMigratingMigrantsLast migrantsIn the tropicsIn the tropics

Where it lives

Recorded in 65 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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