So I am a first year chicken daddy with 4 hens raised from chicks this year. All for laying at full speed now. I need to modify/upgrade the way I have been watering them. Until now... I have been using a plastic tub that originally contained spinach. I keep it in the corner of their run where I can rinse it and fill it with fresh water from my garden hose every day. I noticed over the summer that they drink happily, as I watched them the water seemed to get quite muddy. I want to switch to the red rubble nipple waterers in a hanging waterer but I don't want to stress them out by having the water source change instantly. If i change should I offer both water sources for a while then after a week remove the old tub? Question: Do chickens fill their stomach with water and puke out dirt and debris? Question: Will I be safe switching them over to a hanging setup with red rubber nipples providing the water?