Kahu

Kahu were huge bird Rahi that could be found in three varying breeds. Gukko birds were extremely swift, and generally peaceful though they would fight if threatened. Le-Matoran often tamed Gukko for their Gukko Force. Rahaga Kualus insisted that "Gukko" wes the incorrect name for the species, and may even was an insult in their language. Two of the breeds were previously called "Kahu" and Kewa.

Set information
The Kahu could be made with the two Nui-Jaga. Not to be confused with the smaller Goko-Kahu which was released in the Masterbuilder set. http://images.wikia.com/bionicle/images/2/2d/Alt_12_modelalt_image.jpg