The chopper opens its beak wide in attaining some of its clear, free
notes. The song of the chopper varies from that of the roller to the
loud, full song of the average "type" canary, including the song of
various crosses between the canary and birds of related families. There
are no standards for the song of the chopper other than that it be
cheerful, lively, and free. Its action should be lively and alert. PLATE
2