Skip to main content

Wilson's Storm-Petrel Identification

Looking for ID Help?

Our free app offers quick ID help with global coverage.

Try Merlin Bird ID

The Four Keys to ID

  • Size & Shape

    A small seabird with a swallowlike shape: long, fairly broad wings and a short tail. Wilson's Storm-Petrels have long legs and their feet project beyond the tail tip. The head is small and round, with a short bill with tubelike nostrils on top.

    Relative Size

    Larger than a Barn Swallow, smaller than a Black Storm-Petrel.

    Relative Sizerobin sizedrobin-sized

    • Both Sexes
      • Length: 5.9-7.9 in (15-20 cm)
      • Weight: 1.0-1.8 oz (28-50 g)
      • Wingspan: 13.4-16.5 in (34-42 cm)