Bottle Bird Feeder

Turns a plastic bottle into a bird feeder. Poke a small hole in the bottom of the bottle for a hanging cord, fill it with seed, screw on the feeder and hang it. Choose the 48 mm thread for the large 5 to 6 litre water bottles (recommended, the seed does not get stuck) or the 28 mm thread for a standard drinks bottle. 187 mm across.