HAGDON
Etymology
Noun
hagdon (plural hagdons)
(regional, now, rare) One of several species of sea birds of the genus Puffinus, especially, Ardenna gravis (syn. Puffinus gravis, Puffinus major), the great shearwater, and Puffinus stricklandi, the black hagdon or sooty shearwater.
Source: Wiktionary
Hag"don, n. (Zoöl.)
Definition: One of several species of sea birds of the genus Puffinus;
esp., P. major, the greater shearwarter, and P. Stricklandi, the
black hagdon or sooty shearwater; -- called also hagdown, haglin, and
hag. See Shearwater.
Source: Webster’s Unabridged Dictionary 1913 Edition