To make matters more complicated, in my experience
all the 5 local cuckoos can make calls different from the best known,
particularly when they are responding to each other. A recent example is
the two Horsfield's Bronze-cuckoos currently in my local patch of NW Cooleman
Ridge/Narrabundah Hill. A few weeks ago they were making very house
sparrow-like calls when on exposed perches a 100 m or so apart. Last
weekend while on a fence within cms of each other the calling was a very
pipit like "chirrup", one that I've heard a number of times before (and is
mentioned in Pizzey and Knight). In both cases I was originally alerted by
the "traditional" call.
So the moral of the story is if you see and hear
what you think may be a pipit on a fence, have a closer look.
The very hunched posture of cuckoos (they sit right on the wires with no/little
leg showing) is another clue.
Jack Holland
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