Fork-tailed Storm-Petrel Identification

Adult Description

  • Medium-sized storm-petrel, small pelagic bird.
  • Upperparts bluish-gray.
  • Underparts paler, pearl-gray.

Immature Description

Like adult, but tail is less notched.
Relative Size

Relative Sizebetween robin and crowbetween robin and crow
Measurements
  • Both Sexes
    • Length: 7.9 in (20 cm)
    • Weight: 1.8-2.8 oz (50-80 g)