You may ask, what is Manu? Well, Manu is a hard mud or clay found in the Manu River bed in Peru. This is a man made substitute, reproduced in the US, that is full of minerals that birds need. Being very hard, when your parrot chews on it, it also helps keep their beak trimmed. Our birds, who all have some form of Manu in their cages, love it. This small rose shaped manu can be attached to the side of the cage and is a great size for small birds.