I agree princesthelmared- They are just plain balsy animals. This one was not aggressive toward us, just came in when we were in there talking which sure scares me. I will look into what kind of screen we have around here that I can use. p.s. sorry for your losses also. chicks really don't have a chance. My girls were grown up and could fly and had lots of room to do so but he still got them. I imagine a weasel could go through 50 chicks in 10 min.
I am so paranoid now. I hear my girls laying early am and since we all know how much of a ruckus they make when laying it reminds me of the ruckus they made when the mink was in there. so I keep opening up the door and listening, if it is one fussing it must be laying, they were all fussing when the mink was in there. I tell you, once you have a predator get your flock it REALLY changes things. I now see how people go out and spend HUNDREDS on their coop, it is a tough choice. spend the money or lose your birds and sometimes those are the only choices. I am definately getting the baby monitors like I have seen people on here get.
Even if it was rabid, it has no head to be able to test it, They have to cut open the brain to test for rabies if I am correct, and lets just say the animals brains are no longer in the correct anatomical location(splattered on the door).