Earlier today I noticed that one of my chickens, Harley, was lying down in the corner of her house. She lay there for about 2 or 3 hours before getting up and walking around a little bit again. When I approached her, she stood up a little bit, but her tail feathers were low, and facing downwards. She is also less interested in food. The other chicken, Hazel always comes to me when I'm bringing them food, and tried to gobble it up as quickly as she can, while Harley either takes none, or only a little bit. I returned to her later, and she seemed to be perfectly fine. She still didn't seem to be interested in food, but apart from that she looked as though she hadn't been acting strange in the first place. I gave them some Blackcurrant berries today, I keep thinking that it's why Harley is acting like she's sick. I popped one of the berries by accident one time, and a small tiny white worm came wriggling out. Maybe this worm was in one of the berries I fed her? I doubt it, though. Hazel ate quite a lot of the berries, and she seems fine. I took two pictures of her so you can see if there are any details that I missed out on.