All mourning doves mate for live. Don't know about the White Wing Dove found in central US.
A lot of birds mate for life, like barn owls, geese, bald eagles, golden eagles, condors, swans, brolga cranes, sandhill cranes, pigeons, prions (a seabird), red-tailed hawks, ospreys, and black...
Monogamy, i believe.
Yes I think so!