Its sounds like you probably have a pair of Red tails and probably a sharpie or Coopers Hawk. In general, Hawks don't prey on other healthy adult Hawks. Larger Hawks will attack the nests of smaller hawks. About the only exception is probably a large Goshawk would have smaller Hawks on the menu and be able to catch them. But in your case, a Red tail trying to catch a Sharpie is like a Suburban trying to catch a Corvette. In one of the few studies I've seen, the highest Sharpie mortality was from owl predation, which leads them to roost in dense cover. Your probably just seeing an increase in raptor activity as Hawks begin pairing up and will start nesting in a few weeks.

Thanks for the feedback. I was sitting at my kitchen table when I heard the birds call out and scatter in every direction. I was able to take pictures through my kitchen window of the hawk as he narrowed in on his prey. One of the cardinals hit the window and landed underneath the deck furniture.

The bird seems a sharp-shinned to me, based on its stocky shape; rounded head; and the bare smidgen of white on the tip of the tail. Would expect more white on the tip of a Cooper's tail. On the other hand, the length of the bird is 3.2 times the spacing of those bars. If that spacing is 4" or less, it's a sharpie. If 5" or more, Cooper's hawk. In between, rely on other marks.

If a hawk is 'coming after you' then you've ventured WAY too close to their nest and/or nest tree. Heed their warnings and steer clear of their nesting area. In a little less than 2 weeks the fledglings will have flown and the hawks won't care where you walk or where you go. I actually have a video of a hawk perched on one of our bird baths in our yard. I was 10-12 feet away from it and just arrived home when it flew into the yard hunting birds. It didn't care that I was there and tucked one foot and got comfortable. Hawks ONLY care about humans when they're nesting and have young that haven't fledged, and also when humans are attacking them or frightening them (putting them on defense). Hawklets fledge quickly, so give it time when this happens and make a wide berth away from their nest and nest tree. When hawks are 'dive bombing' you... they're protecting their young and see you as a predator... which you are. Plain and simple they know we're at the top of the food chain and are doing their parental duty and protecting their babies. Also, hawks aren't the only ones who do this. Bluejays, mockingbirds, crows (crows and mockingbirds learn faces, so if you harm, scare or challenge them, or kill one of their own... they will NOT EVER forget what you did, nor will they forget your face). There's a documentary you can watch to see the studies done and see video of how they recognize faces and their reactions. "All monsters are human." Not only a true statement but it's one all wildlife knows.