Red tailed hawks do eat squirrels -that might be why the hawks are there. They hunt by sitting still on a fence or in a tree and waiting for something to move. The big tree you said is in your yard might be just right for them. So sorry!That just doesn't make sense to me. We have only ever had 2 ducks at a time. We don't have lots of wildlife in our development. Lots of squirrels, but I've never even seen a raccoon! I know they are out there, but I've never seen them. Yet here we are, hawks aplenty.