Paco

From Muppet Wiki

Paco (a green parrot) made his debut on Plaza Sesamo in 1972 and, along with Abelardo, was active on the show until 1981. Two designs of both puppets were used, the first one from 1972 and the second design after 1978.

Paco is a grouchy parrot, the equivalent of Sesame Street's Oscar the Grouch. They were mostly active until 1981, when they were replaced by new Muppets -- a large bird named Montoya, and a brown Grouch named Bodoque.

Paco and Abelardo, 1978 design.