Leucism in Cyanocitta cristata

I just saw a Blue jay with a white head in our front yard! It got chased out of the pine tree by another Blue jay. At first glance, it looked like a normal Blue jay, but then I got a clear view of it's head. That is called Partial Albinism, or since it's not truly albino, Leucism. Oh, and yes, I am completely lexiphanic, and lovin' it. And the Google Spellcheck thinks lexiphanic and Leucism are spelled wrong. And Time Lord. Which has absolutely nothing to do with Blue jays, Leucistic or not.