Thanks, Okie4570. I never thought rats could kill healthy, adult chickens - until after reading this thread. If this is the case, then I did right by putting warfarin under the floor boards of the chicken house. Also, I have much smaller live catch traps that I can place inside the chicken house at night, in addition to the coyote cage trap outside of it. This is truly exacerbating.
I've never seen the rat damage first hand, only from an old timer who always said to never put your chicken coop next to a grassy field........ "rats will eat the a$$e$ out of your chickens during the summer months" were his exact words.
Interesting link......I'm going to disagree with their suggestion that a skunk won't eat an adult chicken.
http://www.avianaquamiser.com/posts/What_killed_my_chicken__63__/