Source : Webster's Revised Unabridged Dictionary (1913)

Brand goose \Brand" goose`\ [Prob. fr. 1st brand + goose: cf.
   Sw. brandg[*a]s. Cf. {Brant}.] (Zo["o]l.)
   A species of wild goose ({Branta bernicla}) usually called in
   America {brant}. See {Brant}.

Brant \Brant\ (br[a^]nt), n. [Cf.{Brand goose}, {Brent},
   {Brenicle}.] (Zo["o]l.)
   A species of wild goose ({Branta bernicla}) -- called also
   {brent} and {brand goose}. The name is also applied to other
   related species.

Source : WordNet®

Branta bernicla
     n : the best known variety of brant goose [syn: {common brant
         goose}]