Merlin Bird Graphic

Merlin Bird ID

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    Common Tern Identification

    Adult Description

    • Medium-sized tern.
    • White with black cap.
    • Tail long and deeply forked.
    • Wings white with dark tips.

    Immature Description

    Juvenile with brownish head, and brown bars across back. Immature resembles winter adult, but has even darker primaries.
    Relative Size

    Relative Sizebetween robin and crowbetween robin and crow
    Measurements
    • Both Sexes
      • Length: 12.2-15.0 in (31-38 cm)
      • Weight: 3.3-7.0 oz (93-200 g)
      • Wingspan: 29.5-31.5 in (75-80 cm)