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Buff-bellied Hummingbird Identification

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The Four Keys to ID

  • Size & Shape

    Relative to other U.S. hummingbirds, this is a fairly large hummingbird with moderately long bill, tail, and wings.

    Relative Size

    Larger than a Ruby-throated Hummingbird, smaller than a House Wren.

    Relative Sizesparrow or smallersparrow-sized or smaller

    Measurements
    • Both Sexes
      • Length: 3.9-4.3 in (10-11 cm)
      • Weight: 0.1-0.1 oz (2-4 g)

    Shape of the Buff-bellied Hummingbird© Jay McGowan / Macaulay Library
  • Adult is bronzy green above, with a buff belly, rich iridescent blue-green throat and breast (which appears gray when not in sunlight), rufous tail, and striking red bill with a dark tip. Juvenile has a dark bill, grayish breast, and duller colors overall.

    Color pattern of the Buff-bellied Hummingbird
    © Ian Davies / Macaulay Library
  • Drinks nectar; also catches small flying insects or picks insects off vegetation with its bill. Readily visits hummingbird feeders, where it chases away smaller hummingbirds.

    Behavior of the Buff-bellied Hummingbird
    © Pat Heirs / Macaulay Library
  • Lowland habitats of eastern Mexico and southernmost Texas, including Tamaulipan brushland, thorn forest, riparian woodlands, suburbs, and urban parks with flowering plants.

Regional Differences

Ornithologists recognize three subspecies, one of which (chalconota) is found in the United States. The other two (cerviniventris and yucatanensis) are resident farther south in Mexico. These subspecies differ in the color tones of their body plumage, with the northern two subspecies paler below, the southern yucatanensis more richly rufous rather than buff in the belly.