TNR Colonies and sex ratio?
The TNR colony that I manage has stabilized at 12 cats, consisting of 11 females and one remaining male. This colony is on a farm surrounded by woodlands, and over the last couple of years, all the males (all already neutered) other than this last one have vanished without a trace. I don't know what happened to the others, but I suspect predation as there are coyotes in our county as there are up and down the eastern US. I have put up game cameras, but have never caught anything other than some raccoons and possums. I don't believe that the males drove each other away via territorial behavior since they grew up together and seemed to get along just fine.
I do think that the female cats stick closer to the farm buildings and are, thus, better protected.
Has anyone else taking care of a TNR colony noticed such a difference in male vs. female survival rates?