Barry Lee said:
Yea I also remember the episode with Ablerdo (or however you spell the birds name) I think he also interacted with Rosita as well.
Actually Abelardo didn't interact with Rosita in that episode, but he did interact with Telly and Oscar. Rosita was in that episode though, at the very beggining, and Big Bird was telling her about his cousin from Mexico coming to visit and Big Bird was telling her that he didn't know what he was going to say to him, because he didn't know any Spanish, so Rosita tells him the Manzana, which is Spanish for Apple. Later on Oscar and Telly meet Abelardo when he is looking for Big Bird and Oscar teaches him the word Scram.