The Collaborative International Dictionary of English v.0.48:

Blackcap \Black"cap`\ (-k[a^]p`), n.
   1. (Zool.)
      (a) A small European song bird (Sylvia atricapilla),
          with a black crown; the mock nightingale.
      (b) An American titmouse (Parus atricapillus); the
          chickadee. Also called the black-cap chickadee.
          [1913 Webster]

   2. (Cookery) An apple roasted till black, to be served in a
      dish of boiled custard.
      [1913 Webster]

   3. The black raspberry.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chickadee \Chick"a*dee`\, n. (Zool.)
   A small bird, the blackcap titmouse (Parus atricapillus),
   of North America; -- named from its note.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Parus atricapillus
    n 1: chickadee having a dark crown [syn: black-capped
         chickadee, blackcap, Parus atricapillus]