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Coo Coos are hen-like creatures only appearing in Super Mario Sunshine. They appear in Bianco Hills were they fly around randomly and drop splotches of Goop whenever they get near Mario. They can be sprayed three times to be defeated. They later appeared in episode three of Pianta Village, The Goopy Inferno dropping Lava Goop. They look like large chickens with two beady eyes, a star around one.