Podiceps crisratus

from The Collaborative International Dictionary of English v.0.48

Cargoose \Car"goose`\, n. [Perh. fr. Gael. & Ir. cir, cior
   (pronounced kir, kior), crest, comb + E. goose. Cf. {Crebe}.]
   (Zool.)
   A species of grebe ({Podiceps crisratus}); the crested grebe.
   [1913 Webster]