Melierax

This is Mark thank you so much I looked up a picture and you are correct that's what it is

Dear Melierax,

Thank you kindly for your response.

Truly, it did not look at all leucistic.  It was a beautiful clear white.

Both birds are Juncos, I think, but in looking them up, I'm confused about the terminology (i.e. "Slate-colored" vs. Dark-eyed). Can you tell me which is which? (Sorry about the photo, but it's the best I could do with both birds at once.) 

Thanks, Melierax