Tennessee Warbler Identification

Adult Description

  • Small songbird.
  • Drably colored with few distinct field marks.
  • Back green.
  • Underparts whitish.
  • Crown and nape gray.
  • Thin white line over eyes.

Male Description

Breeding (Alternate) Plumage: Forehead, crown and nape pale bluish gray. Sides of face and neck pale gray. White eyestripe above a dark line through eyes. Back, wings, and rump bright olive-green. Dull whitish from chin to undertail. May have slight yellowish wash across breast or on flanks. Wing feathers and tail dark gray.
Nonbreeding (Basic) Plumage: Plumage duller, with head and nape gray-green, similar to rest of upperparts. Variable yellowish wash on throat and breast. Belly and undertail whitish.

Female Description

Breeding (Alternate) Plumage: Forehead, crown, and nape olive-gray. Sides of face and eyestripe grayish white tinged with yellow. Dusky line through eyes. Back, wings, and rump olive-green. Dull whitish from chin to undertail, with variable yellowish wash across breast and flanks. Wing feathers and tail dark gray.
Nonbreeding(Basic) Plumage: Plumage duller, with more yellow on underparts, especially belly and flanks.

Immature Description

Juvenile similar to nonbreeding female, but duller and darker green, with only indistinct pale eyeline and dusky eyestripe. Underparts pale yellow, darker on upper belly and flanks. Two faint wingbars on each wing.
Relative Size

Relative Sizesparrow or smallersparrow-sized or smaller
Measurements
  • Both Sexes
    • Length: 3.9-5.1 in (10-13 cm)
    • Weight: 0.3-0.5 oz (8-13 g)
    • Wingspan: 7.9 in (20 cm)