My Dad is 76 years old and still chukar hunts a couple days a week and hikes for sheep and all other big game animals. He shot a 174 ram a few years ago. Don't become sedentary just keep moving even if it is a little bit slower.
I hunt with Kennetrek Mountain Extreme uninsulated. I love the ankle support and grip in the rocky chukar terrain. I have used many other boots but even when kennetrek are brand new I don't get blisters and walk all day in steep rocky terrain.
Chukar hunting I usually carry one box. plus or minus a few shells. I have only ran out of shells one time on a bad shooting day. I usually shoot between one and two cases a year.
I don't gut the birds. I breast them out and take the legs. I usually do it back at the truck unless it is in an area where a lot of people park. The coyotes, ravens, and magpies usually eat everything left in a day or two.