Sitta carolinensis

from WordNet (r) 3.0 (2006)

Sitta carolinensis
    n 1: bluish-grey nuthatch with black head and white breast; of
         eastern North America [syn: {white-breasted nuthatch},
         {Sitta carolinensis}]

from The Collaborative International Dictionary of English v.0.48

Nuthatch \Nut"hatch`\, n. [OE. nuthake. See 2d {Hack}.] (Zool.)
   Any one of several species of birds of the genus {Sitta}, as
   the European species ({Sitta Europaea}). The {white-breasted
   nuthatch} ({Sitta Carolinensis}), the {red-breasted nuthatch}
   ({Sitta Canadensis}), the {pygmy nuthatch} ({Sitta pygmaea}),
   and others, are American.
   [1913 Webster]