Clark's Grebe Identification

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The Four Keys to ID

  • Size & Shape

    A large waterbird with a very long, slender neck, a fine, straight bill, and a relatively small body.

    Relative Size

    Larger and more slender than a Mallard, much smaller and slighter than a Common Loon.

    Relative Sizecrow sizedcrow-sized
    • Both Sexes
      • Length: 21.6-29.5 in (55-75 cm)
      • Weight: 25.3-44.4 oz (718-1258 g)
      • Wingspan: 22.8-25.2 in (58-64 cm)

Regional Differences

There are two subspecies: mostly migratory transitionalis of the United States and Canada, which is larger, with longer wings; and clarkii, which breeds only on the Mexican Plateau.

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