Cuckoo calls?

["simon starr" <>]

I'm a little off the subject here but thought it worth mentioning a recent
cuckoo calling in the Wychitella scrub in N.Vic. It was calling repeatedly
for some twenty minutes before I tracked it down.It sounded a bit like a
Horsfields Bronze Cuckoo but definately different,in fact just how my field
guide described a Black-eared.(with which I am unfamiliar).
Trying to break through thick broombush without becoming obvious was next to
impossible but I finally saw the bird.
A very lively little Inland Thornbill. When did it learn to do this?
Simon Starr.