O.k... New mystery for me here... Over the last few months when collecting eggs, I've noticed an occasional egg crushed in one of the nesting boxes. I just figured the hens were crushing eggs that may have been a little soft-shelled. So, I clean out the nest box every time, put out some more oyster shell, and wait. Yesterday though, in one nest, I found three eggs that had been intruded upon... One crushed as usual, one with a 3/4" hole broken into the end with contents intact, but the third with a 3/4" hole broken into the end, and all contents neatly removed; almost no residue outside the egg or in the nesting box. I'm thinking maybe a local rat? We don't have European rats here, but an abundance of Cotton Rats. What else might break a small hole into the end of an egg and eat the contents so completely and neatly? And, how might I prevent future attacks? I collect eggs at the end of the day rather than in the morning, so I know a predator, (if this is being done by a predator), is visiting during daylight hours. Any help out there among the other Florida chicken keepers?