Well I would LOVE to use those rubber bowls-- they sound marvelous, but the problem is my hens aren't in sunlight-- during the winter (and this summer too.

) they were in a shed... they don't have a run since the shed they have is so big... I also found these today:
http://www.amazon.com/Kitty-Tube-Voltage-Outdoor-Electric/dp/B00ATWNIS0/ref=pd_sim_petsupplies_4 Yes, no, or maybe??? I ALSO found these dog bowls, but will the raised sides make it hard for my pullets to drink out of? Here they are:
http://cozywinters.com/shop/kh-2010-2020.html I thought that they were a reasonable price... I would like to use something like this:
http://www.midlandhardware.com/145486.html#.UjtyctI3tYd but I can't find where it says if it's ok for plastic waterers??? But I certainly don't want my shed burning down cause of that.... Thanks for all your inputs guys!!