Crab Apple trees ?? do the majority of the ones you can find in the woods, self pollinate or do most need bee?

Crab Apple trees ?? do the majority of the ones you can find in the woods, self pollinate or do most need bees? or is it a 50-50 thing?Crab Apple trees ?? do the majority of the ones you can find in the woods, self pollinate or do most need bee?
it is a 50-50 thing...