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John,
Yes
its sound is a very weak whistle.” and yes also it is more often heard than
seen. But these are not opposites. The bird is normally secretive (mostly
unlike the Reed-Warbler). Sometimes one
can look for ages into a patch of reeds where it is heard from and not see it.
The sound is the best way to be aware of its presence (I expect some - mainly
older - people probably can't hear it).
And
yes many species will give different calls depending on the geographical area -
but usually fundamentally similar. That is a whole different
question.
Philip
Lidell’s
photo generated much debate/argument at our place, finally everyone settled for
a juvenile Little Grassbird, but were surprised to read. “Its sound is a very
weak whistle.” In our experience it’s quite the opposite and more often heard
than seen. However this reminds me that I’ve sometimes thought the same species
will give different calls depending on the geographical area.
Anyone?
And I
thought Clamorous Reed-Warbler was now Australian Reed-Warbler, or have the
taxonomists changed it?
John
Layton
Holt.
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