My yard is currently Dove Central for south Florida...so I can confirm indeed there are white winged doves all about. There are two pairs of white winged doves every day in my backyard, from about 2pm to 7pm. There are also several pairs of mourning doves, and one lone collared dove. My sunflower seed piles have really been pulling them in - so many that they are ganging up and kicking out the grackles and blue jays, who normally bully everything else in the backyard. The cardinal families are the only ones who seem to be able to get their share among the doves.
On the 'rare' topic...I don't know how rare it would be considered, but at Gumbo Limbo a friend took a photo of a bird she didn't know, and showed it to me...it was a white-eyed vireo, which I had seen at the same park last year.