All of the birds that were showing these symptoms have died.

Since then we have flushed out the birds pond (ran the hose in it for about 24 hours). I wanted to make sure that if it was from the pond that we got all of the bad crap out. Since then we have not had any more birds come down with these symptoms. I really think there was something in the water. I am working on a plan on how to make our pond better and easier to clean/flush out. I am thinking of laying some pvc pipe down with a valve at the end of the pipe so it can be drained and then pouring cement to form the pond again.... I think this will make my life alot easier when it comes to cleaning out the pond...