Gukko

"You should have seen the look on Nuju's face when we took off on the backs of Gukko birds!"

- Rahaga Kualus, BIONICLE: Rahi Beasts

Gukko were a species of large bird-like Rahi. Gukko birds were extremely swift, and generally peaceful, though they would fight if threatened. The Le-Matoran on Mata Nui often tamed Gukko for their Gukko Force. Gukko were also present on Metru Nui, where they lived in the tangled cables of Le-Metru.

Jaller and Takua rode a Gukko bird on their search for the seventh Toa to get through Le-Wahi.

Relatives
The Gukko bird had three close cousins:
 * Goko-Kahu
 * Kahu
 * Kewa

Trivia

 * The word Gukko may actually have been an insult in the bird's language, as told by Rahaga Kualus.
 * The word "Gukko" was originally Kahu and Kewa. However, due to a lawsuit by Māori activists, they were changed to Gukko.