Because I use the nipple itself as a support...and it's easy to refill from the outside.Is there a particular reason why you mount your waterers on the outside of the crate as opposed to the inside?
Hmmm, that should work but a small juice bottle would be easier, and cheaper if you screw up the threads.I bought a couple of chick waterers today, I think they’ll do the job nicely - and the openings in the red bases make perfect vents!