Since mid July my 10 New Hampshire hens have not produce their usual 7 to 8 daily egg production. As I mention a month or so ago two of my adult hens mysteriously died in there nesting box. I contemplated that it could be: Pack of rats but, I only found one or maybe two eggs broken the other 5 are gone without a trace. It could be an individual or several cannibal chickens eating their own kind (the eggs) but, wouldn't there be a daily mess of broken shells instead of just one and, most of the yolk and white is still in the nesting box. It could be the heat but, they laid fair last year and its been 10 degrees cooler these last few weeks. It could be there diet but, their diet didn't change. Could it be some other predator like a possum or raccoon. Don't they eat the adult chickens too? Most of our hens have a raw spot on their back. We contribute this to our roster liking rough sex but, maybe not...? Finally, it could be some disease or parasite but, what and how do I identify it and then treat it. If anyone has have any suggestions that will get my hens back on the egg laying track I would appreciate the input.