Im getting ready to build a quail recall pen and im trying to do a little reasearch....One quesiton i have is how do you keep the water clean without letting all the birds out....  i was thinking of building one of the 4x4x6 and the seem to have one regual sized door that you open to clean it out etc when it is empty, and when you want to realse birds you just open a door at the top of the pen.

Yes a Johnny House....thats  a good i dea i could make a small door where i could just reach in and grab the water...and if they do get out they sould call back.