Described as recently as 1948, Aleutian Green-winged Teal (A. c. nimia) are identical to the Old World race, except for a slightly superior size. However, atypical of far-northern dabblers, they are year-round Alaskan residents, where the teal are possibly the most numerous puddle-duck of the Aleutian Islands. Frequenting ponds and lakes in summer, the Aleutian teal shift to marine beaches in winter, and commonly forage at low tide in tide pools and shallow-water reefs. Females of the three races are virtually indistinguishable.
