I've only had chicken for a year now. But I've had 5 hens in 4 weeks die. This morning I went out and The QUEEN MUM was acting drunk and fell over in the snow. She's always done well in cold weather and we've had a cold snap here in Alaska but now we're in the 40's during the day. I have several mature chickens that are not laying. AT ALL! So I don't know if they're just getting old or what the problem is. BUT the others that died earlier were hens I hatched this spring. I'm just confused!!! I've fed them normally. They have fresh water all the time and occasionally I give them ACV in the water. WHY ARE THEY DYING? AND why have the others just stopped laying. PLEASE HELP!!!