This one part Bird feeder is designed for small birds. You can leave some food for them here :-) .

It is super easy to make. It is just one print that takes around 5 hours to print and uses around 50 gram of filament. I added a screen shot of Cura where you can see the print settings. That gives you an idea where the 50 grams of filament come from.

I tested this model with a 0.4mm Nozzle, without Print Support material. It is important to set the cooling of the print at maximum, when the 3d Printer reaches the top. Otherwise the ring(eye) on the top may deform a bit. It happened in my case and you can see it on the Photos as an example.At 100% size this Bird Feeder is 156mm high and has a diameter of +/- 76mm.

If you have any questions, feel free to ask :-)