Mine have. One night I locked 5 new pullets in the coop. They were 4 months old. By 7 am the next morning they were using the nipples. I didn't show them anything. I didn't jiggle the nipple to make water drip out. They figured it out on their own by being curious. As I said, even the neighbors' chickens learned to use the nipples at my place.Even when chickens have been drinking from the typical waterers their whole life, they still figure out how to use the nipples?