Sir David Attenborough forced to explain when animals are not filmed in the wild for new BBC documentary after fakery row

'Er, this bit isn't real': New David Attenborough series will tell viewers which shots are fakedBBC2 series Africa will see viewers told when scenes not filmed in the wild The BBC was accused of 'fakery' following last year's Frozen Planet seriesOne episode featuring a polar bear birth was filmed in a Dutch zoo Producers say they will make it clear when 'controlled filming' is involvedThe move will 'maintain trust and credibility' with viewers It was one of the most memorable moments of legendary wildlife presenter Sir David Attenborough's Frozen Planet series.