We live on 5 acres and there is a hawk that stays on our land. Today, I was taking Annabelle outside, and realized the hawk was waiting to take his chance at swooping her up (she is a puppy). Hawks like rabbits, which we have a lot of too, and I didn't think until today that the hawk might try to get Annabelle.
So, if you have hawks, be careful, they like small four legged animals.