Dr. A. B. Meyer considers the remains found in the North Island (N. mantelli) to be distinct from the South Island species, which he names N. hochstetteri.
For the habits, cf. Sclater and Hudson, Argentine Ornithology, ii. 1889, pp. 159-161; Gosse, Birds of Jamaica, pp. 355-363; Gundlach, J. f. O., 1875, pp. 353-355.
Mr. Rothschild has separated the Canary Island race as H. fuerteventurae.
Chapman and Buck, Wild Spain, London, 1893, p. 342.
The Boers of South Africa term all Bustards Paauw, i.e. Peacock (Pavo).