Bird Identification: CLOSED: Bird With Albinism?, 2 by wingwoman

wingwoman wrote:
We often see Mourning Doves and Eurasian Collared Doves in our yard here in Denver. This morning, a beautiful dove-like bird showed up and mystified me for many hours. There\'s the blue eye-ring that one would see on a Mourning Dove. There\'s a mark on the back of the neck, just like a Collared Dove. He\'s white, which suggests albinism. Perhaps he was tossed into the air at a wedding, and lost his way? Somebody help me identify this stunning bird.