I don't feed the squirrels and we do have hawks in the area (not sure about crows) but now that you mention it, I might consider feeding the squirrels away from the cherry tree.
So, every summer when our cherry tree grows, naughty squirrels come and steal every piece of it, leaving us with green cherries that end up the last cherries of the season. They do this with our strawberries too but the cherry tree is more of an issue. It's a little too early now because our...