Mr. Mooney's pet bird is a female cockatiel named Greenback. Lucy teaches it to say, "Give Lucy more money."
Goof: While on the roof, Viv mentions that the last time she was up there was when the two put up the TV antenna (Lucy Puts Up a TV Antenna). Even though it's the same house, the antenna is in an entirely different location and the entire design of the roof is different.
Mooney: (fuming at Lucy for losing his bird) Leaving my precious Greenback with you was like leaving General Custer with Sitting Bull!!