I don't know when it happened but i found one of my hens dead this morning. I didn't see her running out like the rest when I came out to check on them this morning...so i went looking for her.. i saw her in the run like this.. what is going on ? She was fine when i saw her yesterday.. I'm in Arizona.. the temperature is dropping so is it because of the cold ? or maybe something she ate ? i don't know what to do...:/ I started out with a flock of 5 on April 2016 (my first flock).. and now i'm down to 4..