Black-throated Blue Warbler Identification

The Four Keys to ID

  • Size & Shape

    Black-throated Blue Warblers are small, well-proportioned birds with sharp, pointed bills. Compared with other warblers, they are fairly large and plump.

    Relative Size

    Larger than a Blue-gray Gnatcatcher, smaller than a Hermit Thrush.

    Relative Sizesparrow or smallersparrow-sized or smaller
    Measurements
    • Both Sexes
      • Length: 4.3-5.1 in (11-13 cm)
      • Weight: 0.3-0.4 oz (8-12 g)
      • Wingspan: 7.5-7.9 in (19-20 cm)