I have the smaller ones for the medium birds and larger ones for the larger birds.

The medium birds love these and we put their every other day peanut treat in them so they have to reach in to get it out. I do not make it that easy as I hang it from the middle of the cage so they can't push it up against the cage to open it up, but it does not take long before they learn how to put their beak in one of the holes in the top .

The large birds love the large size also. They clang them when they are demanding treats and the plastic cups clashing together make considerable noise that the birds love. They are very sturdy acrylic.

Pros: Colorful, washable and all medium and large birds love them

Cons: None I can think of

My macaw Ruby loves this toy! It is her favorite its great to put nuts and treats in and she loves to bang it agains her cage which can be kind of loud sometimes but she just loves it

Pros: Fun Fun Fun

Cons: can be loud

When my wife came home with these I thought used them for keychains. After a closer look, I thought, birds won't feed from these things. Man, was I ever wrong !

Pros: Birds are attracted to these

Cons: None known

I should have bought more of these. I had no idea the birds would really take to them like they do.

Pros: Need more of these

Cons: none