By Chris Johnston
Last night, in the lovely rain, Frances Cincotta and I – torches in hand – scrambled our way through a mass of golden wattles and young eucalypts growing on the edge of my dam to see if we could spot the cackler (aka Peron’s Tree Frog – Litoria peronii – common names Maniacal Cackle Frog, Laughing Tree Frog, Emerald Spotted Tree Frog).
We’d looked up several guides – Chris Tzaros ‘Wildlife of the Box-Ironbark Country’ and the recent ‘Frogs Field Guide’ produced by North Central CMA. So we were looking for a frog about 2 inches or 50mm long, greyish, with faint emerald spots and some bright yellow/orange in the groin, armpits and back of its thighs (a bit hopeful to think it might flash orange at us!).
Geoff’s advice (see comments on previous post – http://geoffpark.wordpress.com/2012/01/02/maniacal-cackle-frog/) – I quote: Try this method. You will need two people with torches – stand roughly 90 degrees apart and then shine your beams to where you think the calls are coming from. With a bit of luck the frog should be at the intersection of the two beams. Hope this is useful encouragement. I did say it would be a challenge! Cheers, Geoff
The 90 degrees was a particular challenge, with the thick bush to squeeze through along the edge of a deep dam!
The night was cool, and we could only hear one frog cackling as we plunged through the dripping leaves. We moved in towards the sound, at about 180 degrees and trying not to blind each other with our torches. Then another frog started calling, and our original ‘target’ stopped. So off Frances went to try and find that one which seemed to be in a more open spot.
Then the original frog cackled again – I was close and suddenly I spotted what might have been a frog. A glint from its eye confirmed it wasn’t just another dead leaf, but was the cackler.

Spotted at last!
Dashing back, Frances got her torch on him too and we closed in for the … photo.

- A closer look at the calling Maniacal Cackle frog
And by the time we’d extracted ourselves from the tangled wattles, three cacklers were calling – wonderful! Today I went looking for tadpoles – to see if all this male frog calling had succeeded. The CMA guide says that eggs are laid in December (and males keep calling through to January). There are tadpoles there, but they are too shy and I was too slow to see if they are the future maniacal cacklers.
Thanks for the challenge Geoff, and everyone else who told me about their cacklers, and to Kate for her original identification. It’s been interesting to see how each frog guide explains the presence and distribution of this particular frog. For example, the CMA booklet says that this frog is ‘locally common’ whereas Tzaros’s maps show no records for this frog from Newstead to Castlemaine – a gap that seems to demonstrate the inadequacies of DSE’s Atlas of Victorian Wildlife – or alternatively that more of our observations need to find their way into this atlas, given it is used for public land planning and management!
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