Here is my version of a bird feeder based on a regular plastic bottle.
This version is optimized for fast and high quality printing because it uses a hex as a profile.
Simplest design, very easy to print, no glue, no nuts, no screws.
PETG, ABS, PLA and any other is good choice for the thing filament.
I use Ender 3 (with standard hotend 0.4) and some time to print this design.
Of course, besides a 3D printer, you need a bottle and tiny seeds, otherwise the birds will not fly to you :)
I would be glad to show you pictures of my birds, but in my country birds fly to the feeder only in winter, when there is a lot of snow around
BirdFeeder.stl | 287.5KB |