Those "doves" released at weddings aren't doves at all, but white racing homing pigeons.Pigeons and doves belong to the same family, say those who raise birds in the Top of Utah. Homing pigeons are able to travel great distances back to their homes, whereas doves do not have that same homing instinct.You may see true doves -- "love doves" or turtle doves -- on display in cages at weddings, says Daniel Hash of United Doves of Kaysville. "The only kind (of birds) that are ever released are trained white racing homing pigeons," he said.Because pigeons frequently have a negative image as a nuisance bird, Hash says the birds used in ceremonial releases are popularly referred to by their official name: "rock doves."How far they can these birds fly and do they ever get lost? Here are some interesting facts about white racing homing pigeons.