that why I had to go to glass bottles.
I did make them a semi hide. I took a piece of plywood (thin stuff) and some 2x4 and made a little table and setthat intheir cage they love it. less chesing on other things, they have a perch to get away from th young lol ( at least until they can climb up) and I got a spot to dump thier food .
plus with an exercise wheel they go happy even the young ( end up like coths in a dryer when an adult on there)