David Attenborough's early films to be shown in colour for first time

Week of BBC programming, including Zoo Quest, will mark naturalist's 90th birthday

Some of David Attenborough's first natural history films will be shown in colour for the first time as part of a week of programming to mark the broadcaster's 90th birthday.

Zoo Quest, which was first broadcast in 1954, was previously thought to have been filmed in black and white until a recent discovery of colour 16mm film. The footage will be included in a 90-minute special of the series, alongside four "passion project" films chosen by Attenborough from his vast back catalogue.