Hi everyone. I have 4 baby silkies in a brooder. I hatched them myself in an incubator. They are 2 weeks old. They all doing well... or at least they seem to be... but I am concerned bc I have not had to refill their water at all. I have the "rent a coop" nipple waterer. Its sitting on a block for the correct height. I have shown each chick multiple times how to get the water from it. I have witnessed at least two of them drink on their own... but the water level is not going down...if it has it is BARELY. The chicks are eating and moving around...but this is worrying me! What should I do?