So I'm quite new to keeping chickens and recently I've bought a buff Orpington into my newly made pen and she seems to be adjusting well. She's walking around the garden and happily ruining the flowers and eating her pellet mash but I don't think she's drinking water. I was told hens drink a lot of water about 400-500ml but I haven't seen her touch her water once. I bought her a Eton water drinker but I can't tell if she's drinking or not. Any ideas to how I'd know if she's drinking l?