Probably freed by the owner...for insurances purposes.

In Oklahoma and Texas there were lots of farmers who got on the "Ostrich breeding bandwagon". When the smoke that had been blown up their butts dissipated, and the pipe dreams of mass portions of the American populace becoming ostrich meat lovers faded, all of a sudden ostriches were every where, running free and on insurance APB lists.

Hope that ostrich doesn't have a bomb belt strapped to it.
EEK
"45mph suicide bomber ostrich terrorist alert".
Birdbomb

[Edited on 14-9-2003 by uNBaLaNCeD]