Saw at least seven individuals at various spots around the Tidbinbilla Wetlands. A volunteer said he believed they were Southern Water Skinks which are apparently very common there.
I will draft a few points that should help. However these two species (tympanum and heatwolei) are very difficult to separate - it took me a few years of field work down at Kosciusko to get it sorted. Back then they were known as warm temperate and cool temperate forms of the same species. Even now if i don't do some practice with my binoculars (or specimens in hand) I find them hard to tell apart. Leave it with me and i will post a comment on identifying them in the next day or so. Others might like to add their suggestions as well. Fortunately the two species very rarely occur at the same site and that helps. For example at Coree Flats heatwolei occurs throughout the woodland and forest and tympanum occurs only out in the open wet tussock grassland - wet heathland areas on the "flats" . However at the edge of the "bog" I have seen the two species within a few metres of each other. WillO
Will, this would be good. I have tried to distinguish them by reading whatever literature I was able to find - you will find this in the descriptions. It would be good if you can think about this before coming up with something new. Geoff
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