So my hens are just not getting it. I installed four nipples in a five gallon bucket a hung it at eye level over a month ago. They were completely uninterested. I tried to show it to my friendliest hen and she looked at me like I was crazy. I moved their regular water next to it. Finally, I let their fount waterer run dry last night. This am, they have looked and looked for water in their waterer yet continue to ignore the nipples so I picked up the waterer. I even took one to the nipple and pushed her beak into it, releasing water. They just are not getting it. It's 90 something out and I know they are thirsty. How long should I give them to pick it up before I give their waterer back?