With A. acuta and A. georgica sometimes placed in genus Dafila. Frequent but not universally accepted separation as full species#R is supported by morphological evidence: differs from “parental” A. acuta in its much smaller size (weight of one drygalskii female 450 g vs mean female weight in North America 871 g) (3); male like female in coloration (4); male richer brown on head and breast, and somewhat more so on lower underparts, than female acuta (2); male underparts rather more mottled and, lower down, more barred, less organized and uniform than the streaking of female acuta (1); tail plain with no white fringes (ns). Some consider drygalskii not separable from eatoni. Two subspecies recognized.
Food and feeding
Status and conservation
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