Does a barn owl have a mate for life?

Answer 1

Yes it does. Unless one of them gets killed by another animal then the other will seek a second mate (with the exception that if the owlets are still young and incapable of flying then that single parent will not for a while)

Answer 2

That would depend on the species of bird. Some birds mate for life, others mate for only a mating season.

Answer 3

yes it humps everything everywhere for anytime of anyday for every life until it dies of getting tired.