Land Development - Pond drain

The land was totally demolished and flattened next door to us. 80 acres of orange groves containing a couple ponds. Now they are draining a natural pond into our pond so they can totally reface and clean it up. I wonder what happened to all the fish in there that the wildlife ate including alligators and the bald eagles. The fish population was wiped out on our little pond they are draining into now shortly after a chemical application (100's of floating dead fish), what will the wildlife eat that relied on that? I guess they might be pushed out. If you look closely at this pic you can see a duck in the bottom right hand corner. Probably investigating all this craziness.