From language and tool use, to social learning and trickery, there's almost no limit to the fancy feats of avian mental gymnastics. Can they beat you at chess, can they fill out your tax return? Probably not, but join me as we go on a romp to find out just how smart birds can be.

Just what is a nest and why do birds make them? Join us as we explore the strange world of avian construction.

What is a feather and what can it do? Spoiler alert, it's a lot more than just flying.

Last time we asked 'what is a bird'? This time we're going even deeper. We're taking a tour of the 10,000 species of birds flip-flappin' their way  around this planet.

Just what is a bird? We're going on a romp to Bavaria to find out.