I have a 16 week old Welsh Harlequin hen that suddenly started acting odd today. I came home from work to find her in the corner of the pen, laying down by herself. When I entered she got up and came over, but much slower and kept away from the others. I checked her over and can't see anything externally wrong, but she is heaving slightly. It's hard to tell, but if I watch her close enough, she keeps opening her mouth and straining lightly, like she's trying to poop. My father said that she had kept away from the others throughout the day today. I noticed her drinking a little, but she seems lethargic. I fear she may have a blockage or something, but I'm not sure what to do. I actually work at a vet's office, but I'm not entirely sure if they'd actually be willing to see her. I almost feel silly asking. And I know I need to do something in the meantime. I've read of giving warm baths. Would that help? I'm also having a hard time figuring out if I can give her anything orally, like oil to help her pass it, if there is anything. :/ Oh, and I did just switch them over to an All Flock pelleted food a couple days ago. I was worried about this too, because they've always been on crumbles. I'm hoping that didn't cause an issue, but all of the others seem completely normal. They have been eating very fast lately though, like I'm starving them or something. They're all overweight though, so I've been trying to cut back.