i have a five 4 month old chickens. when i came to let them out this morning i discovered a yellow watery coloured poo. since letting them out of their night coop ive noticed one of the male chickens is just standing around with fluffed up feathers with no energy and just keeps closing its eyes and doesnt run or make a noise when i go to pick it up. i have since separated it from the others and noticed it's poos are a white colour and liquid occasionly comes from its mouth area. i couldn't quite see whether it came from the mouth or nose. any ideas on what it could? thank you.