I have an 8 plus year old Pekin drake. He has not had any health issues or injuries. I myself have not seen this before in any of my ducks and have had them for over 10 years. But I also have not had one reach this age. He was in the swimming pool and let me pet him which sometimes happens but not that often, I noticed he wasn’t getting out when I put the feed out. I picked him up to check his feet, (no signs of any problems), when I put him down he “flopped” wings out and was using his wings to move. He eventually stood and walked but seems disoriented. I do live in Texas and it is hot, but they have 3 pools, plenty of shade, and a fan. I have since moved him to my medical pen with shavings and electrolytes. Any ideas? The only “exotic” vet we have is an hour away and not open for emergencies. Thank you in advance.