A small olive-green warbler. Despite the name, doesn't live in Tennessee year-round — Alexander Wilson collected the type specimen there during migration.

§ Quick facts

SizeBody 11–14 cm (4.3–5.5 in); wingspan 18–22 cm
Weight8–14 g
LifespanWild typically 3–5 years
OrderPasseriformes
FamilyParulidae

§ Encyclopedia

The Tennessee warbler is a New World warbler that breeds in eastern North America and winters in southern Central America, the Caribbean, and northern South America. The specific name peregrina is from Latin peregrinus "wanderer".

Source: Wikipedia — Tennessee warbler Licensed under CC BY-SA 4.0

§ Identification

Field marks. Breeding male: gray head, white eyebrow, dark eye line, plain greenish back, clean white underparts. Fall birds yellow-green with a pale eyebrow and white undertail coverts.

Similar species. Orange-crowned Warbler is similar in fall but has yellow (not white) undertail coverts and a blurry-streaked breast; Tennessee is cleaner and shorter-tailed.

Voice. A loud, staccato, three-parted song that accelerates: 'ticka-ticka-ticka swit-swit-swit chew-chew-chew-chew'.

§ Diet & behavior

Diet. Insects (caterpillars primary), spiders, occasional berries on migration.

Behavior. An active canopy forager in spruce forest and, in migration, flowering trees where it drinks nectar. Population tracks spruce budworm outbreaks.

§ Range

Boreal Canada in summer; winters in South America

§ Habitat

Boreal coniferous and mixed forests

§ Threats

Boreal forest loss, climate change.

§ Conservation status

According to the IUCN Red List, the tennessee warbler is currently classified as Least Concern.

§ What helps

Support boreal forest conservation.

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§ Further reading

§ Sources cited

  • Cornell Lab of Ornithology — All About Birds
  • National Audubon Society
  • iNaturalist
  • IUCN Red List