Summary

Created a new chicken feeder from scratch. It will be hung from the lid. Simply add a hole in the slicer or drill one. (It kept malfunctioning whenever I tried to add the hole.)
Edit: The design has been modified to include larger feed holes and a solid base (use 5% infill).

If you have a Bamboo printer, simply download the .3MF file and proceed with printing.

EDIT: added Feeder4 parts and 3MF
It’s bigger. I keep making it bigger as my chickens grow :)