Kate Humble to leave Springwatch Springwatch, which first aired in 2005, is now enjoyed by four million BBC2 viewers and aims to track the changes in nature during the season. The show's success is thought to be based on a balance of education, remarkable wildlife footage and the gentle banter between presenters, which until now included Humble, Packham and Martin Hughes-Games. Humble has already been replaced on the programme's sister show Autumnwatch by Strachen, after announcing she would not return for last season's series. Humble, 43, is currently presenting BBC2"s Earth's Amazing Journey and is due to lead a new associated live programme later this year. She has also begun an ambitious project with husband Ludo, taking on a farm in Monmouthshire with the aim of teaching animal husbandry and rural skills. In a statement seen by the Mirror, a BBC statement confirmed: "Kate is currently working on other projects for the BBC, which means she is unable to present the next series of Springwatch. Kate is still very much a part of the Springwatch and Autumnwatch team and presented our Winterwatch special last month. The change will mean Michaela Strachen and Chris Packham are reunited on screen once again, after fronting children's wildlife programme The Really Wild Show in the 1980s. Humble's decision not to return to the show comes as the mystery into her former co-presenter Bill Oddie's departure deepens, with reports of an undisclosed "incident." Oddie, who left the show in 2008, has claimed he was axed during filming in Dorset, with BBC staff "blanking him." He has spoken on his "deep shock" in being told he would not be asked back for the following series, and claimed nobody explained the reasons behind it. In response to his comments, made in The Lady magazine, the BBC maintains his departure was the result of his ill health and said the channel was "always open" to working with Oddie.