A Red-tailed Hawk coming in for a landing after a failed attempt at nabbing a mouse. Another interesting fact about RTHA’s: These guys can see ultraviolet light wavelengths, and mouse urine is visible inside of those wavelengths. Kestrels also have this ability and use it to help them hunt mice. Red-tailed Hawks are different however, and use it to fly back up to their perch following a missed attack on a mouse. At this point they gaze down below to see how badly they made the mouse pee itself.