Sorry but I've been hearing it all my life (now 42) and I've never known it.
it sounds a bit like a squeeky chair - about 1 second long bursts whhhhooooeeeet - usually 3 in a row getiing slightly higher pitched. Very clear sound. Always around dusk.
I'm going to have to record it aren't I :D
I don't know where you are, but the King Parrot has a call which reminds me of a squeaky swing. It could fit your description.
The BiBY site has a call in MP3 format, which includes the squeaky call I am talking about, as well as other harsh lower-toned calls.
http://www.birdsinbackyards.net/finder/display.cfm?id=99
Have a listen. It might help.
cheers
Denis
Denis Wilson
www.peonyden.blogspot.com
Thanks Denis,
Its not as shrill as that one.
Im in suburban Brisbane by the way.
The hunt continues
You sure its not the Koel?
http://www.birdsinbackyards.net/images/audio/eudynamys-scolopacea.mp3
That is most definitely it magpie - thanks so much.
I did a google image search & cant say I've ever seen them, they must be secretive.
I did spot this last year - it looks a bit too big, big talons & seemed to be very young (it was trying to take fresh chillies off my plants)
http://img101.imageshack.us/img101/769/birdsa3.jpg
(apologies for the bad pic)
That is a photo of a juvenile female Koel. It has been the subject of many posts to BIBY. A very interesting bird as the adults are more often heard than seen because they are usually found high up in tall trees.
Sue