Mystery bird call near Glenorchy

[Troutnut]

I just got home from my first trip to New Zealand (amazing country!) and have been trying without any luck to figure out a bird call my wife and I heard one morning when camped in beech forest along the Caples Track west of Glenorchy. We were in the tent an hour or two after sunrise when this flock of birds arrived and started making these interesting calls from the treetops all around us. They were too well hidden up in the treetops for me to spot them, but I was able to record the call.

They made a variety of little chirps, but the main distinctive call sounds like a descending note from a slide whistle, or a cartoon bomb drop sound effect, sometimes followed by a similar but shorter ascending call. I just cut together a few pieces of audio recording into a 40-second clip shared here:

https://clyp.it/rox5bzn0

Does anyone recognize it?

[Ranger of the North]

Crud, I'm sure I've heard that before, but the name. isn't. coming. to. mind.

[tim]

Sounds like a starling

[simon.fordham]

There is something about those descending warbles that makes me think 'brown creeper'. It could be a mimic though.

Cheers
Simon

[Davidthomas]

I’m fairly certain it’s a starling.

[Nick Allen]

Sounds like a starling to me too.