Hi @NMenzies, Goannas are known to nest in the mounds of Nasutitermes exitiosus, one of the Gluegun Termites (plus arboreal termite nests are sometimes used by Tree Goannas). This is the mound of the Milk Termite Coptotermes lacteus. There are no confirmed (and hardly any unconfirmed) records of any goanna species nesting in a Coptotermes termite mound, but there have been so few people watching, it is still a slim possibility that they do. Tree Goannas dig into the mound at ground level, as do Echidnas. Rosenbergs Goannas dig in at a higher level, often about 15-40 cm below the very top. Keep looking but this digging might be by Echidnas, Humans or even Pigs perhaps if pigs dig into mounds.
Also a goanna nesting excavation may start wide like these but then it will have a narrow part where the tunnel is only10cm wide. Did either of these excavations have that narrow tunnel going deeper into the mound?
Hi Don, thanks for your comment. Did not know that Rosenbergs dig in at a higher point and will keep that in mind when observing future mounds! No, from memory, it was a wide opening right to the back of the excavation - no visible narrow tunnel beyond. Thanks for all the info! Can I ask - how do you tell the difference from a Nasutitermes vs a Coptotermes mound at that distance?
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