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Merlin Bird ID

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    Cassin's Sparrow Identification

    Adult Description

    • Small sparrow.
    • Mostly plain grayish brown.
    • Plain face.
    • Sings in flight.

    Immature Description

    Similar to adult, but buffier and with dark streaking on underparts.
    Relative Size

    Relative Sizesparrow or smallersparrow-sized or smaller
    • Both Sexes
      • Length: 5.1-5.9 in (13-15 cm)
      • Weight: 0.6-0.6 oz (17-18 g)
      • Wingspan: 7.9 in (20 cm)