My goose, Guillermo, has been for about two days very lethargic. He has runny poop. Not eating well. His feet look discolored, not as 'orangy'. I get him along with another goose and two ganders. They given to me about two years ago. I not sure, really, how old they are; maybe 4 to 5 yrs. I pen them up and every couple of days I give them free run of an acre for a couple of days. They're on grit and leafy green veggies and whatever they find in the yard. There is no pond but I have a plastic wading pool for them. Water is changed every day, twice if I can wing it. They also have three drinking water buckets of 3 gallons a piece. Anyone have any ideas?