One of my chickens has a completely flat crop today, it was full yesterday before bed but I’m getting worried because it’s empty at almost 4 pm here. She is about 9 months old and laid yesterday. She seems fine and ate some treats earlier. It’s frigid here, around -10, outside and crazy windy, the coop is a bit warmer, about 10 degrees. I’m worried with these temps she won’t stay warm overnight if she doesn’t eat. I’m going to make a warm mash for her, but should I be worried she didn’t fill up her crop a little by now? Does the cold make them want to eat less?