they look like doves to me, also there is two of them if you notice, doves (and their dirty cousins pigeons) are life pair bonders (notably also another beautiful corvid, the jackdaw, is also a life pair bonder) - you can be positive about their species if you are hearing them do that whole whoo whooo whooo mating call thing and one of them dancing around the other, and the doves do this thing often when they fly past "caww caww cawww"