This species is common throughout most of its range in the USA. Many color-morphs exist, and full albino Birds are not unheard of. This individual shows some pigment, so she is properly referred to as "leucistic." Another term could be "partial-albino."
If you look in the lower left hand corner of this shot, you will see the leucistic Hawk's normally colored mate. Locals report the pair have been frequenting the same geographic area for nearly 10 years!! Great Gully Rd., Town of Fleming, NY. November-2002. CP-995, Swarovski ST-80 HD.
You can't ask for a better pose! Here, you can notice a few black flecks of pigment in the feathers of the body. Great Gully Rd., Town of Fleming, NY. November-2002. CP-995, Swarovski ST-80 HD.
Giving me a look...her eyes show dark here, but have a yellow iris. Great Gully Rd., Town of Fleming, NY. November-2002. CP-995, Swarovski ST-80 HD.
At the base of the telephone pole in the above two shots is someone's driveway. When they drove out, the white Hawk flew toward me. Here she is in a thicket. Note the pale pink color of her tail feathers. Great Gully Rd., Town of Fleming, NY. November-2002. CP-995, Swarovski ST-80 HD.
Showing her bill well here. The cere looks a bit pink. Great Gully Rd., Town of Fleming, NY. November-2002. CP-995, Swarovski ST-80 HD.