a co-production of Natural History New Zealand, NHK (Japan Broadcasting Corporation), Discovery Channel, & NDR Naturfilm Studio Hamburg & Fernseh Allianz ; directors, Jeremy Hogarth, Stephen Downes
a Hugo van Lawick production, in association with The Discovery Channel. Chimpanzees: return to the forest / Nature Awareness Films, in association with Evangelische Omroep
by David Attenborough ; a BBC TV production in association with Australian Broadcasting Corporation, Turner Broadcasting System Inc. ; BBC Bristol ; executive producer, Peter Jones