What is "black-cap chickadee"

Blackcap \Black"cap`\ (-k[a^]p`), n.

1. (Zo["o]l.)

   1. A small European song bird ( Sylvia atricapilla), with a black crown; the mock nightingale.

   2. An American titmouse ( Parus atricapillus); the chickadee. Also called the black-cap chickadee.

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

3. The black raspberry.