CHICKADEE, common American name (derived from the call-note) for the black-capped titmouse (Pares, or Penthestes, atricapillus), of the north-eastern States. The brown-capped chickadee (P. liudsonicus) is resident in Canada. The Carolina chickadee breeds in the south-eastern states. The mountain chick adee (P. gambeli) is resident in the Rocky Mountains and west ward, and there are several other western forms, one of which, the Alaska chickadee (P. cinctus alascensis) is also found in eastern Siberia. All are closely allied with the Old World titmice. See TITMOUSE.