jay \jay\, n. f. geai, of. gai, jaj, perh. fr. ohg. g=ahi.
   cf. gay. zool.
   any one of the numerous species of birds belonging to
   garrulus, cyanocitta, and allied genera of the family
   corvidae. they are allied to the crows, but are smaller,
   more graceful in form, often handsomely colored, and usually
   have a crest.
   1913 webster

   note: the european jay garrulus glandarius is a large and
         handsomely colored species, having the body pale
         reddish brown, lighter beneath; tail and wing quills
         blackish; the primary coverts barred with bright blue
         and black; throat, tail coverts, and a large spot on
         the wings, white. called also jay pie, jenny jay,
         and kae. the common blue jay cyanocitta
         cristata., and the related species, are brilliantly
         colored, and have a large erectile crest. the
         california jay aphelocoma californica, the florida
         jay aphelocoma floridana, and the green jay
         xanthoura luxuosa, of texas and mexico, are large,
         handsome, crested species. the canada jay perisoreus
         canadensis, and several allied species, are much
         plainer and have no crest. see blue jay, and whisky
         jack.
         1913 webster

   jay thrush zool., any one several species of asiatic
      singing birds, of the genera garrulax, grammatoptila,
      and related genera of the family crateropodidae; as,
      the white-throated jay thrush garrulax albogularis
      also called the white-throated laughingthrush, of
      india.
      1913 webster
see also:
gay garrulus cyanocitta corvidae garrulus glandarius jay pie 
jenny jay kae blue jay cyanocitta cristata aphelocoma californica 
aphelocoma floridana xanthoura luxuosa perisoreus canadensis blue jay whisky jack 
jay thrush garrulax grammatoptila crateropodidae jay thrush 
garrulax albogularis white-throated laughingthrush