Similar things are happening here in New york. Pickerel frogs used to plague
our yard. They were the biggest ones i had ever seen. I even raised one from a tadpole. This year no pickerel frogs. Helios was the only toad although they aren't common here anyway. Paddy will be happy about this; the grey tree frog population has EXPLODED because in the summer last year, a pair of goshawks, a pair of peregrine falcons and two pairs of coopers hawks moved in amd started eating all their predators. In my lake two years ago i gound 50 tads in one day but last year i found 10 for tge whole year. Its really sad