New Chick Mom here, I purchased this Watering system for my chickens. They are approx. 3 months old. They cannot figure out how to get the water out. I go out there and hold down the yellow tab and fill the little cups with water a couple of times a day. They come running and drink, drink, drink. I had to buy a different kind of waterer that fills up the rim so that I can be sure they have water all day when I am not home to fill their cups. (They prefer the little cups, for some reason the water stays colder.) I tried showing them how to push the yellow tab down, but they still can't do it. Do you think as they get bigger and their beaks are bigger, they will automatically push it down when they drink?? Any suggestions?