Wild pheasants don't know how to find and eat or drink from feeders or waterers. If you had some domestic chicks to put with them they could teach them...the only other thing you can do is to feed live mealworms about 1/2" size.
I have had to do this with my prairie chickens, their not too smart about figuring out the whole domestic feed and waterer system.
I fed 1/2" live mealworms for about 2 weeks, then switched to 'breaded' mealworms, wet the worms down, then rolled them in crumbles, did that for another two weeks until they finally figured out the feeder. I would put the mealworms in a dish with the crumbles, so they finally learned.
Water was a real PITA, I used window screen and would mist it with a spray bottle. It would form droplets on the screen and they would peck at the drops. I would also dip their beaks in a waterer several times a day. Eventually they learned to eat and drink from the feeders and waterers.
Lots of hard, time consuming work but it was the only way I could get them to survive. Good luck with your chicks. HTH