I had seen this big boy lurking around, but just let it slide. Figured he take care of the mice the feed was attracting. My hens just started laying a month ago, so apparently he was hanging around waiting for the eggs to come. However, when I caught him in the nest box, he had to go. Couple of whacks with the hoe, and he was no more. I had 4 eggs in that box in the am, but apparently he ate all 4 of them. My farmer friend said that he was a chicken snake. But after a little research, I found that there are numerous snakes that people call chicken snakes, because they eat eggs. What this guy was was a black rat snake. Apparently, they can climb straight up a brick wall, and make their early living on bird eggs as well as mice. They are actually the largest snake in North America growing to 8 ft, (this guy was over 5 ft) and when they get big enough to eat chicken eggs, that's an easy meal for them.