Don't feel bad. I can beat you on that one. I'm watching my Fayoumi hens. I suspect they got ahold of some rodent bait. Not a lot, a small chunk but could cause them a lot of grief and me just plain grief to me. Over two years when my coop was overran with mice I lost about 20 birds to them eating poisoned mice faster than I could get them picked up. Now this trying to eliminate a rat colony that moved in this time last fall. I'm still seeing an occasional rat wander in. We find tunnels in our yard and in our pasture. Believe it or not they are tunneling in deep, going under my hot wire, crossing the run without lifting the soil in order to get to the concrete platform that is under the shed. They remind me of the Graboids from the movie, Tremors. (one of my favorite movies)DH and I just put the two cockerels (the Lost Boys) in a dog crate and into the well house for the night. In the morning they will go on that last, long ride ... while we were out there I counted my hens. It looked a little bare out there. There were only 15.... Seriously? DH reminded me two hens are in the brooder with the bibis! Oh yes! So that means we have 17. We've only lost 3 and I know what happened to all of them. So it's all good.
I found one dead in the run two days ago after seeing new tunnels under the building and putting out bait. I picked a holder up this morning but somehow they knocked it down and I couldn't find the bait when I locked up.
Always something......Sometimes I get so tired of fighting the rats and mice. One of the reasons I decided not to breed or get any more chickens but just enjoy the ones I have.