ngoko,
I see that no one replied. I'm guessing you found out how the 2nd cup works. I just happened to see how it works on youtube.
The weight of the water pushes down on the release valve inside the cup stopping the flow of water. As the chickens drink, the weight lessens and the valve opens...
We got a pair of chickens back in May 2017. I don't know which breeds (they are two different breeds). My wife and daughter just came home with chicks and said we'll need a coop in a few weeks. I built the coop and run. Things are not quite running smoothly, which is why I joined this forum. I'm...