Other nice water dispensers are already available on thingiverse. But the holders were not practical, and a bit long to remove. So I made a new model of it.
Setup:
Print both parts
Take a water bottle and drill 2 holes in the cap (diam. about 6mm)
Glue the Cap into the hole of the dispenser
Fix the hook with screws in the chicken run (about 15cm-20cm height)