I have 3 hens that like to knock over their waterer and like to drink from the mud the water makes. i bought them a wider waterer so they would stop doing this, but now they drink ALOT of water, and throw it up on the dirt and drink the mud the water makes. these hens are about 9 months old, and are the only ones doing this. i also noticed that these 3 poop a mixture of poop and mud, i dont want them to get sick or even block their crop with dirt, what can i do to prevent this???? i feed them good, give them treats. i keep their waterer in their run, but i have a large pan under it so it wont make mud. when they had the smaller waterer, they sometimes had the rooster knock it down for them.