For my 10 chicks, I introduced 2 chicken nipple on bottles in the first week and was elated that all of them used it, but kept a standard chick waterer in the brooder (the small red plastic bottom with the 1 liter plastic reservoir). After about 2 weeks, most of them still seem to prefer the often dirty waterer (albeit changing at least 2 times per day) rather than the nipple feeders. Please note that I am not around 24/7, so they seem to be using the nipple waterer based on the water levels, but they use it less when I watch. The little ones seem to be using the nipple waterers more, so this may be a level issue since the waterers hang low. Will be moving them in about a month to the coop (at about 6 weeks of age). Do I still use both or cold turkey them to the nipple waterers and hope for the best?