This is very large (5L) plastic bottle bird feeder with roof and bottle filling funnel.
The feeder can be used without roof as this is quite large for some printers.
Bottle thread is 38mm with 3 threads: link to image

Idea is taken from user Gazorpa https://www.thingiverse.com/thing:1673557

I printed it with 0.8mm nozzle and variable layer height 0.2-0.6mm.

Rope is attached with strong duct tape.

If not sure that the bottle fits with feeder thread it is reccomended to print only thread part at first to check how it goes. Also good idea to fine tune the print settings on threaded part.

IMPROVEMENTS MADE COMPARED TO INITIAL VERSION:

1) Feeder sealing to bottle neck improved.
2) Capillary drainage added to feeder. If some rain manage to crawl through threads towards feeder it will be directed to canal and if the rain then meets the capillary tubes it will be sucked out through the bottom of feeder. Also if some rain want's to crawl through the roof to the sides of feeder it will be also directed to capillary tubes.
3) Filler shape improved. It widens from top to bottom. It avoids sticking seeds inside feeders tube even if the print quality is coarse.
4) Feeder spread cone shape improved.
5) Feeder spread windows slightly larger.
6) Feeder funnel V2 sealing to bottle neck improved.
7) Feeder roof V2 is better match to Feeder V7
8) Initial designs removed.
9) Feeder roof V2.5 added. Outer diameter is 210mm which is 11,42mm less than V2.

XXXL version added.
Bottle thread is 48mm with 3 threads. I have put it onto 7L bottle.
Hook is same
Files:
feeder_XXXL.stl
feeder_roof_XXXL.stl
funnel_for_XXXL.stl