These blocks are loved by all three of my birds. They are the perfect size for my two Yellow Naped Amazons. My macaw loves them too, but they are a little small for a such a large bird who loves chewing as much as she does! They do make a nice foot toy for her though.

My cockatoo loves to chew wood. The blocks are a perfect size for her, and she prefers the alphabet blocks over the plain ones. (Although I do get both) It gives her something to do because, as everyone knows, a bored cockatoo is a naughty cockatoo!