I use to raise game fowl always free ranged, I had two ways to catch them. (1) The easiest but most time consuming take a small pen prop up one Conner or side with a stick ,attach a long rope to the stick, long enough where the chickens cant see you , get behind a tree, barn, house, etc.. ,feed the chickens in the pen with it propped up, put a small amount in front of the pen to lure them.in, it will take days or weeks and cutting back their feed to get them in the pen, let them go in and eat a few days before you jerk the string and catch them in the pen,because the ones that get away wont go for it again. (2) Take a long stick I have a 2x2 piece of lumber 16 foot long on one end, I have a 1x1 about 11/2 to 2 foot long nailed to it, making a T, go out when its real dark out side take the stick, a flash light ,a ladder,a fish net ,and some help, find where there roosting, take the stick with the 1x1 side up the tree, to the limb there roosting on, get them to step on the stick, and slowly move them down to where you can reach them, if they jump off the stick thats when you need the fish net, cut off your flesh light let them squat on the ground and net them up . I raised games for allot of years and people wondered why I quit, If only they knew how much trouble it was, they would wonder why I didn't quit years ago