heteralocha

from The Century Dictionary.

• noun A genus of New Zealand sturnoid passerine birds, notable for the extraordinary sexual difference in the bill, which is comparatively short and quite straight in the male, and very long and curved in the female. The base of the bill is wattled in both sexes. H. acutirostris is the huia-bird. Also, improperly, Heterolocha. Also called Neomorpha.