I've raised a lot of gamebirds since 1995. Pheasants, besides cannabilism issues, are easy. Chukar, besides wet ground issues, are easy.
MacFarlane Pheasants has a lot of great information on their website and good videos on YouTube.
https://www.pheasant.com/https://m.youtube.com/@PheasantFarm
They do a lot of gamebird seminars, that are open to the public.
You can buy Top Flite Netting for pretty much any size pens you want. Design the pens so that you can herd and easily catch the birds.
Steve Fogt, who lives near Kirkwood, Ohio, has my favorite large pens. The pens are long and relatively skinny. The pens all go into a narrow corridor that narrows down to a metal disc conveyor belt. There's an L shaped lid that can be closed down on the crates at the end of the belt. Once the lid is down, the crates can be pushed into a barn with a shelve, that keeps the birds from popping out of the crates, about a half inch above the crates. The crates have grooves where a lid can be slid in.
To catch the birds, he just drives the birds into the corridor and chases them towards the belt. The birds go into the open crates. He then closes the L shaped lid and slides the crates into the building, under the shelf. He can load hundreds of birds very quickly this way.
One side of the crate is made from flexible plastic, that originally was used on pallets of baby bottles. You can easily pull out or push in a pheasant through the plastic.
Pheasants will need blinders or ring bit gags, to prevent cannabilism. Diane and I used Poly Peeper blinders. We would put on 500 blinders a night, until we were done.
Chukar do best on dry ground. In very wet areas, it's best to keep Chukar on wire or deep sand. Chukar usually won't hurt each other and will stay in near perfect feather, even when crowded.
Do you have any specific questions?
Keith