The Science Channel (284 on DirecTV) had an episode of "How It's Made"
tonight that featured how bird automata are fabricated.  This episode
repeats Friday 10/22 at 0200 CDT.  I have not tried to see if the
episode is available online.

The episode also features pressure cookers, oceanographic buoys, and
stainless steel tank trailers, in case this helps you search for it.

 [ Robbie and I could not find this episode online, but I have
 [ enjoyed watching this series of programs in the past.  -Jody