Chickens are dying again

I went out to lock the chickens up and did a head count.  Only 46 chickens roosting in the coop and I had to chase out the mother cat and her five babies out of one of the nest boxes.  Sarah later informed me that there was a chicken carcass in the yard.  I am not sure who is doing the killing.  On a positive note, I did get the wheat truck running and drove it over to get the last 80 bales of hay loaded.  No one was around so I hoofed it the two miles home.  If the weather will hold for another 3-4 weeks I may be able to get the upper fence completed.  Here is to surface frost only and no deep freeze.