I do wonder why the Sesame Street movies were directed by non-Sesame people
I don't know why Kwapis was picked to direct "Follow that Bird". I know it was right in the middle of a very busy time (1984-1986) for the Muppet folks - with
Fraggle Rock,
Sesame Street,
The Muppets Take Manhattan,
Labyrinth,
Muppet Babies, Little Muppet Monsters and numerous TV specials all in various stages of production all at the same time. Jim and his close collaborators were very busy around 1985. I also assume that many of the key Sesame Street producers/directors were staying in New York to helm the show (which was still doing 130 new episodes a year) while others went to Canada to film their parts for "Follow that Bird".
And while it is true that Gary Halvorson (director of The
Adventures of Elmo in Grouchland) did not have any "Sesame Street" experience prior to directing
Elmo in Grouchland, he had worked with the Muppets many of the same performers on
Muppets Tonight (where he directed 10 episodes). And he has since done work with the Sesame Street gang, most recently directing 2007's
Elmo's Christmas Countdown.