Cockatoo unscrews bolt and disassembles rest of mechanical lock:
http://www.cs.unm.edu/~aaron/blog/archives/2013/07/if_birds_are_th.htm?utm_campaign=Buffer&utm_content=bufferbe47e&utm_medium=twitter&utm_source=buffer
Bear plays trumpet and does hula hoop:
http://www.youtube.com/watch?v=5GPuQ01FpQM&list=FLPJvfu27p7CTq3V2FdwUJ2A