One of my 6 hens (barred cuckoo maran)has recently started just hanging out by herself most of the day. She seems sad. She doesn't run around following the herd like normal. Here in Seattle the weather has changed, it's now cloudy, gray and cool. She is puffing out and looking bigger too. She just sits in one or 2 of her new favorite private spots while the other birds scratch and wander our huge backyard. She also has not laid an egg for a week. This is new. I see no diarrhea or signs of sickness. Could the fall weather change her egg laying? 2 changes recently: we got a new small leghorn who is sweet to everyone, not mean. And I completely changed all hay and nesting material in the coop on the same day from straw to cedar shavings. Don't know if that matters for laying. She is eating and drinking. Just not walking around and not laying. She isn't molting, her feathers are super full and she looks bigger.