This could work for some flocks, I think.
http://permaculturenews.org/2013/05/20/poo-free-self-filling-duck-waterer/
http://permaculturenews.org/2013/05/20/poo-free-self-filling-duck-waterer/
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Thanks, Amiga. The other advantage I can see with something like that is it would provide some protection from the sun. That would help keep the water a bit cooler and slow down algae growth.This could work for some flocks, I think.
http://permaculturenews.org/2013/05/20/poo-free-self-filling-duck-waterer/