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Cassia Crossbill Identification

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The Four Keys to ID

  • Size & Shape

    The Cassia Crossbill, like other crossbills, is a small but stocky songbird with a notched tail and a characteristic crisscrossed bill. This crossbill has a thicker bill than most Red Crossbills (though difficult to discern in the field), adapted to pry apart the hefty scales of Rocky Mountain lodgepole pines in Idaho's South Hills.

    Relative Size

    Larger than a Cassin's Finch, smaller than an Evening Grosbeak.

    Relative Sizesparrow or smallersparrow-sized or smaller
    Measurements
    • Both Sexes
      • Weight: 1.0-1.6 oz (28-44 g)

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