I enjoy the frogs and have a few bullfrogs on both ponds. Tons of BF tadpoles as well as Leopard frogs but the number of adults doesn't seem to increase. I guess the migrate away when they mature. Many of my BF tadpoles overwintered and are now growing legs. It's funnu but if I walk around the ponds the frogs jump in like I'm trying to kill them but my riding mower doesn't bother them at all. I have to be careful or I'd run over them.