How many lyrebirds?

["Peter Shute" pshute2]

I've finally got around to uploading this unattended recording from 18 mont=
hs ago. The microphone was set up between the fork of a fallen tree. About =
a minute into the recording, what sounds like at least two Superb Lyrebirds=
 start shrieking at each other from almost on top of the microphone for the=
 next 15 minutes.

Unfortunately it's clipped, and I'm wondering what people think of the resu=
lting sound? Does the clipping matter?

I'm also interested to hear opinions on what the birds are doing. There's a=
lmost none of the typical mimicry, just shrieking. Territorial dispute?

https://soundcloud.com/petershute/brandy-creek-track-lyrebirds2

Peter Shute