My chickens are completely free range, they're all over the place. I lost a lot of eggs about 2 weeks ago to what i think was a snake. Then a few days ago i noticed the nest box in the house was over turned, but my chickens are okay. I figured they had over turned it when they hopped in it. I've been meaning to go out and fix it but haven't had the time. When i got home last night, i noticed both of my chickens sleeping next to the front gate, which is right at the corner of our house. (I had noticed a lot of poop there because it is my flower bed.) I left them be last night, but i went out the the house and looked in, the bedding in the house is very disturbed, so it makes me think that maybe something got into the house and turned over the nest box and scared them off. They've been sleeping in that house for over a year, so what do i do? I know that i need to lock them up and they do have a door that shuts and locks. Will they trust the house again?