This week the Tweet is the Pilotbird.

It's chocolate-brown in colour, and it measures about 18 centimetres. And although it's a secretive bird, that bright and clear call will alert you to its presence. Legend has it that the Pilotbird's call was a useful guide, or 'pilot', for hunters who were looking for larger, plumper, Lyrebirds!

And back in 2014 our Tweet of the Week quizmaster Matthew Crawford spoke with the sound recordist David Stewart... Matthew asked for a favourite recording - one which would make a good challenge in Tweet of the Week. And Dave chose that one: his own recording of the Pilotbird.

Thank you, Dave, for a life time of work devoted to recording sounds of nature - work that will outlive all of us. David Stewart, who recently died in Queensland.