So far it's working. I miraculously am getting eggs again. At least 2 every day, and yesterday 4 from my 5 hens! The tunnels keep reappearing under the fence, but the chickens and eggs are unwounded. When it stops raining, I am going to bury fence around the edges to try and at least make it more annoying for the predator to get in.
I've finished all the planting I am going to do for the season. I've got far more than I have room for, but I thought I'd put together some plant packs to give to the neighbors. Everyone is suddenly interested in growing, and I figure now is as good a time as any to bring fresh food to the neighborhood.
Today I planted pumpkins, melons, cantaloupe, zucchini, cucumbers, cabbage, cherry tomatoes, paste tomatoes, bell peppers, jalapenos, shi****o peppers, dill, parsley, oregano and basil.
I have beans but will direct sow those, as well as corn if I can possibly find a space for it.
UPDATE: What ever is tunneling under the fence has been identified as a rat. I saw it pop out of a hole, drink from the chicken's waterer, and then whisk into a separate hole. I'm glad to know what is making the holes at least. Now, what to do about it.