I tried to search online but couldn't find anything substantial. People who have had this happen don't usual find out the answer. Someone did say that one of their local ag. groups would do a free autopsy. You may want to check that out or do the autopsy yourself.
This may help you do that:http://www.angelfire.com/ar2/rojo1/post.html
It's not a pleasant thought for our feathered family but it may give you peace of mind.
This may help you do that:http://www.angelfire.com/ar2/rojo1/post.html
It's not a pleasant thought for our feathered family but it may give you peace of mind.