Old thread sorry....I wanted to make a note in case someone is searching like I was.
Here's a good link for info about what possums are really up to.
http://www.opossum.org/discourage.html
****If a possum can get in, so can a coon or a fox.**** Possums don't seem to be as crafty....
As much fun as some people have "killing" wild animals, or torturing them (i.e. drowning), it is an exercise in futility. If you don't have a predator proof set up - you will always be losing something to predators of some kind. It's logical and a balance. Wild animals and predators belong and are necessary in their environment. If you kill one, another one will fill the gap, and you lose again, you would never know when.
I am a little nervous about opossums here. I feed birds on the porch roof and pears strewn about from the overproducing pear tree. They come on the roof and in the giant Arborvitae next to the house. I could stop doing that...
But, the run is chain link, electric fenced and covered, coop is inside pen. (I still want to add 2 more strands of electric, maybe a chainlink or solid roof on the run, and a flush frame for the coop door) The precious pet chickens are locked in coop at dusk. And....I have a baby monitor. I think I have done all I can at this point.