Locking Ring Coop Cup 10 oz Stainless Steel Bolt On Dish set of one dish and one ring
4 In Diameter - 2 In Deep - 10 Oz liquid capacity (silver color, the blue is a reflection)
If you are seeking an additional bird food dish that is difficult for your bird to remove this product will solve your problem.
It's designed to fit almost any size bird cage and is very easy to install. Simple 2 bolt installation
The bowls have "bumps" and must be rotated to a certain position in order to be released from the ring (something like a medicine bottle).
If your bird is pulling out his feeder dish and dumping his food or water on a regular basis, these may do the trick.