https://www.somerzby.com.au/products/chicken-feeder-automatic/

Chicken Feeder by Somerzby

The Somerzby Aluminium Self Treadle Feeder

- Saves valuable feed from rain and feral pests
- Holds 4.5kg of feed
- Train your Chooks to use the self feeder
- Instructions included
- Made from long lasting rust-proof aluminium
- Stainless steel fasteners
- Weight 2.4kg

Chicken Feeder Automatic
Chicken Feeder Treadle

http://youtu.be/ocx09yNN4rk