New York Natural Heritage Program
Henslow's Sparrow
Ammodramus henslowii (Audubon, 1829)
Birds

Habitat [-]
The Henslow's Sparrow is a grassland species, preferring tall, dense, grassy fields without woody vegetation. Wet grasslands are also used. Peterson (1983) found them in large, ungrazed fields with a variety of moisture regimes and without woody invasion. They were often found on hilltops. Bull (1974) described their habitat preference in New York as "grassy fields and meadows with scattered bushes and herbaceous plants, both in wet and dry situations." They can tolerate lightly to moderately grazed pastures (NatureServe 2005).

Associated Ecological Communities [-]
  • Cropland/field crops
    An agricultural field planted in field crops such as alfalfa, wheat, timothy, and oats. This community includes hayfields that are rotated to pasture.
  • Hempstead Plains grassland*
    A tall grassland community that occurs on rolling outwash plains in west-central Long Island. This community occurs inland, beyond the influence of offshore winds and salt spray.

    * probable association but not confirmed
  • Maritime grassland*
    A grassland community that occurs on rolling outwash plains of the glaciated portion of the Atlantic coastal plain, near the ocean and within the influence of offshore winds and salt spray.

    * probable association but not confirmed
  • Sedge meadow*
    A wet meadow community that has organic soils (muck or fibrous peat). Soils are permanently saturated and seasonally flooded. The dominant herbs must be members of the sedge family, typically of the genus Carex.

    * probable association but not confirmed
  • Successional old field
    A meadow dominated by forbs and grasses that occurs on sites that have been cleared and plowed (for farming or development), and then abandoned or only occasionally mowed.