TV guide: 25 of the best shows to watch this week, including tonight Ireland’s Illegal Adoptions, Eating with the Enemy, Goodbye House and Other Voices Sun, Feb 28, 2021, 06:00 Sunday, BBC One, 7pm Just when you thought there was no aspect of the animal kingdom left for Sir David Attenborough to cover, the veteran broadcaster pulls a rabbit out of the hat. Or in this case, a hummingbird, Bengal tiger, fiddler crab and a whole host of other eye-catching creatures. Attenborough has always been fascinated by colour in the natural world – and this new two-part series sees him travel from the rainforests of Costa Rica to the snowclad Scottish Highlands to indulge in his passion. In tonight’s opening part we find out how, millions of years ago, the first animals had eyes that were unable to distinguish colour. Gradually, however, this changed and “seeing in colour” gave creatures many advantages, whether to find food, attract a mate or warn off an enemy. Get ready for amazing footage of peacocks, mandrill baboons, birds-of-paradise, Andean flamingos and strawberry poison dart frogs.