Large Bird Feeder

thingiverse

This is intended for large wild birds, after being eaten blind by the Galahs I decided to make a flow restrictor and only allow 2 holes to open. An hour later they had lifted the choke ring up, so I needed a locking ring to keep it down. The bottle size is used for chemicals & fertilisers see picture, neck die. 34mm threaded 1.5 turns and approx. 4mm pitch. The holes in the base are to drain water.