Birds sometimes have a dust bath, or just let ants crawl all over their bodies, but I think this Dove is just cooling off. Again you have caught very good detail.
I hope you got some of the rain last night Sandi - I've seen them do this around here as well and wondered about it - great details on the dove's coloring.
Most of the birds I snapped last week were lying like this because of the heat!...apparently it is the coolness of the earth that is a help to them, also helps spreads the feathers to allow air between!...