Continuing the natural-history strand. Ends 6.45.
Series producer Simon Nash ; Editor Fiona Pitcher www.bbc.co.uk/nature
Polar Bear Diary "Bear sheriff" Wayde Roberts tackles three aggressive polars that are on the loose in the Canadian town of Churchill. Narrated by Tony Hawkes.
Producer Paul Appleby (R) (S) (W)
5.25 LIME Big Cats - Serval Secrets The first film to explore the secretive life of the African serval cat as cameras follow a mother and her three kittens in the Ngorongoro Crater in Tanzania. Narrated by David Attenborough. Producers Amanda Barrett and Owen Newman
Series producer Robin Hellier (R) (S) (W) S
5.55 Natural World Wild Nights. A long history of hunting has resulted in most wild mammals avoiding humans. In this film, Simon King adjusts his daily rhythm to follow the nocturnal activities of British wildlife as he tries to win the trust of badgers, deer and foxes in their Somerset domain. Producer Simon King ; Series editor Michael Gunton (S) (W) King and country: page 22