Parasitic Jaeger Identification

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The Four Keys to ID

  • Size & Shape

    Parasitic Jaegers are streamlined but powerfully built seabirds, the middle-sized of the three jaegers. Breeding adults have a long pointed tail (not as long as Long-tailed Jaeger). The bill is fairly slender, giving them a pin-headed, full-bellied look.

    Relative Size

    Larger than a Long-tailed Jaeger; smaller than a Pomarine Jaeger.

    Relative Sizebetween crow and goosebetween crow and goose
    Measurements
    • Both Sexes
      • Length: 14.6-20.9 in (37-53 cm)
      • Weight: 10.6-20.6 oz (301-585 g)
      • Wingspan: 42.5-46.5 in (108-118 cm)