First, these work great! The improved design with the little cups underneath (as pictured) is fabulous, and we were excited to see that, as it was unexpected. The nozzles release water without a lot of pressure.They’re not as easy for the babies as we’d hoped. Our big girls (3-weeks old) seem to have it down without issue. We have a separate brooder with four younger babies (two are 1 week, and two are two weeks). We’ve shown them several times, but they don’t seem to be drinking from them, and will even peck at the water bottle itself. When we do it for them and show them again, they drink everything pooled in the little cups and peck around, but to no avail. We have pushed their beaks to them several times. We installed yesterday, and measured the water levels to check this morning. They’re not getting enough. We’re going to keep showing them and monitoring through today, to give them a chance, but if they don’t get, we’re going to need to change them. I’m already thinking about giving them electrolytes. Just something to be aware of when getting these. Make sure your chicks are getting it before leaving them alone and assuming they have water to drink.Last thing to note, our package did not come with the promised drill bit. My husband had one, so for us it was fine, but if you don’t, that seems to be a common theme, so be prepared for that.