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Neotropic Cormorant Identification

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The Four Keys to ID

  • Size & Shape

    A slim waterbird, small for a cormorant, with a long neck, a rather long tail, and a fairly thin, straight bill with a hooked tip. It has broad wings and large webbed feet.

    Relative Size

    Larger than a Black-crowned Night-Heron, smaller than a Double-crested Cormorant.

    Relative Sizebetween crow and goosebetween crow and goose

    Measurements
    • Both Sexes
      • Length: 24.0 in (61 cm)
      • Weight: 37.7-52.9 oz (1070-1500 g)
      • Wingspan: 40.2 in (102 cm)

Regional Differences

North American and Caribbean birds (subspecies mexicanus) have large bills but are smaller than the South American and Panamanian subspecies (brasilianus).