The Humongous-Billed Caterwauling Who-Zee-What is one of the Series 1 Koo Koo Birds. The bird is mostly white with a pink and yellow striped belly. The bird's eyes are very interesting compared to the other Series 1 Koo Koo Birds because the sclera this bird's eye is blue, unlike the other Koo Koo's who have white scleras. It comes as a plush, figure,Totally Koo Koo plush
and a pillow pet.