I had considered a Mourning Dove and had search for photos showing it flying from behind. The photos I found had a different wing structure where there was clear separation between the wing feathers so that the entire neck and back are visible between the wings. The tail also was much more symmetrical with bright white markings which this does not have. I am new at this and would love to know how you identified it conclusively. This is my first year using cameras, feeders, fountains and bird baths to enjoy nature.