Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Robyn Williams: And still on robots, bigger ones this time, can you imagine anything more cruel than ...

NOVA: I've heard that you have used robotic female bowerbirds. Why? Borgia: One of my students, Gail Patricelli, has just gotten a paper accepted at Nature that describes how she has used a robotic ...

The day Doug Holden stumbled on a bowerbird's nest of blue trinkets in the making, he knew it was something very special.

Add articles to your saved list and come back to them any time. There are goals you set yourself as an amateur birdwatcher – not the competitive tally of species, that's the domain of the twitcher.