Yes! a low level outflow drawing air across the bottom of the cage and through a collection chamber, that would accumulate feathers and seed hulls. Just like a chemical fume hood with the flow pattern across the bottom instead of just out the top, but lower level air flow so it was just enough to grab the loose crud, not the higher flow required for fumes (I seem to remember we had to verify flow of at least 150 fpm constant). Air could be filtered, both charcoal pre-filter for odor and HEPA for cleanliness, then returned to the room, take care of both functions at once. Bottom would be a rotating belt, as it curved over the end it would both flex to crack off the poos, but also have a dry scraper and then a cleaner-fluid scrub to completely clean and sterilize, it would dry on it's way back around during the underneath portion of the rotation due to the already present air flow for the vacuum-filter. Collection chamber at that one end would catch all the crud as it came off. Automatic timer to rotate the belt and initiate cleaning, at appropriate intervals.What we need to come up with is a low-pressure vacuum hood, like in a chemical lab, to gently pull air (and feathers, dust, seed hulls) up and out.
The ideal cage would have one built in. Along with an automatic litter cleaner, of course!
What else do we need built in?
I'm Will ... single dad with 3 daughters