Not that it really matters, as both are wonderful flyers, but check out that long tail and the V pattern on its chest - it's a juvenile barn swallow. Good luck to the little fella, they've got the odds stacked against them - hobbies, then having to fly across the Med and then the Sahara and back again ...
Good on yer for letting them nest on your property.
Good on yer for letting them nest on your property.