The members of the Nsefu pride take a huge risk: they're leaving their home turf, and crossing the Luangwa River in search of prey. Navigating croc-infested waters is a challenge, especially for the pride's yearling, dubbed the Misfit. It's a foolhardy gamble, but hunger has forced their hand. If they're to succeed, they'll need the Misfit to come of age-their very survival depends on it.
In this fourth episode, Iolo Williams explores how birds in Wales have adapted to living alongside us, making use of our buildings, parks and gardens and even the waste we throw away. One of the most notorious urban birds is the gull and Iolo explains why these very adaptable and intelligent birds are doing so well in Cardiff
Thanks to new technologies combining genetics, ethology, geology and even particle physics, paleontologists can now recreate the missing branches of the tree of life. Now, paleontologists can show that there were far more feathered dinosaurs than previously believed.