Our imprint is now truly global. Our impact now truly profound. Our blind assault on the planet has finally come to alter the very fundamentals of th… - David Attenborough

The battle between cuckoos and other birds is a continuing one. The cuckoos developing new stratagems and perhaps finding new victims, and the victims finding new defences.

Each [pelican] has already survived many perils in its young life. As a chick, it fought battles with its brothers and sisters and won.

An eye from another world; a smell-detector, investigating the path ahead. We don't often see a snail that way, and that's because we've only recently had the tiny lenses and electronic cameras that we need to explore this miniature world. But when we meet its inhabitants face to face, we suddenly realise that their behaviour can be just as meaningful to us as the behaviour of many animals more our own size.