I am not a great bird automata person, but review the pages 78ff, in
the Bowers "Bible", and you will see several suggestions for birds in
cages. There were reproductions of bird automata made in West Germany
in the 1950s and 1960s.
Larry Greenfield
(Message sent Sat 11 Jul 1998, 20:58:42 GMT, from time zone GMT-0700.)