I have dipped on sighting the Striated Grass-wren and the Mallee Emu-wren on each of my last three trips to Hattah-Kulkyne NP. I use the approach to finding these birds suggested by Rohan Clarke and Tim Dolby, “walk slowly and quietly while listening for their high-pitched calls.” I have spent days trawling through ideal mallee spinifex habitat and heard not a squeak – deafening silence. I would say my hearing is in the normal range for someone my age – 67.
Is there a readily affordable microphone that can pick up the high frequency calls and ‘convert’ them into something I can hear? I imagine that people interested in bats face a similar problem and are able to access equipment that enables them to hear their calls.
Yours
Dave Dickson
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