I had one of those very small red waterers for baby chicks, but my four are older now, and I needed a bigger one. Got a green one that holds 5 quarts. I read that chickens are attracted to red. Well, they didn't even look at the green waterer. After their dinner, they always drink, and they didn't tonight. Now I'm afraid they won't drink. Are chickens really THAT dumb? They are 10 weeks, with one being 2 years old.