A broad winged hawk, most likely a male, was soaring over the trees just off in the wood by our house. It was sounding a characteristic territorial call, a high pitched whistle. This is often done when a threatening species strays too close, such as a red tailed hawk. This also indicates that there is nest somewhere in the woods, which I'm hoping to venture out and find, hopefully without disturbing the hawks. Broad winged hawks are easily identified by their namesake broad wings and black and white tail banding.