I picked up 4 juvenile pullets (7 months old) Saturday. They had a standard waterer & that is what they are use to. All I have is a 3.5 gal pail nipple waterer. I've tapped it trying to show them how it works. They watch but haven't used it yet. I dont have any other wateres in their pen BUT we have snow. I know they are thirsty because as soon as I let them out of their coop they run over & eat the snow like there's no tomorrow. Should I keep waiting for them to figure it out or should I just go out and get them a standard waterer?