@joscobie you are the 2nd person in a year with a nest like this in Poa. It looks a bit like the nests made by Eastern Bettongs (extinct on the mainland, re-introduced at Mulligans Flat Woodland in ACT) but it does not look quite right for those either. Can you put a camera on it perhaps and we might all learn something?
@DonFletcher sorry just edited my comments on size..it started raining just when I found and rushed pics. There are bandicoots and antichinus in the area. About 30m from permanent Creek.when I go back out to site I will take camera and torch.Also the app is trimming my pics as I have my hand above nest holding grass back, so it shows scale better
@joscobie, thanks, I had been baffled by the size and so ignored yr comment. Now it makes a lot of difference. Could be Bandicoot. Much too big for Antechinus and they don't make nests in Poa. In that area I guess you have Long Nosed Bandicoot (LNB), not Southern Brown Bandicoot (SBB).
I meant leaving out an automatic camera (aka trail camera, game camera, wildlife camera) if you have access to one, so after a month or more you could see what species had come and gone. Good ones cost ~$850 (e.g. Reconyx). Brownings are mostly OK at around $350. I hear that Moultrie and Bushnell are OK too. Lots of other brands are available for around $200 or even less. The quality and reliability of trail cameras is proportional to price. Also, if you purchase, need to allow $$ for one or two sets of rechargeable batteries and a charger.
@DonFletcher , many thanks. I have had cameras out monitoring as part of BCT Land libraries. I will try to get one of our work Trail cameras out. It's a friends property and a bit of a drive to but I would really like to know what is nesting in there. I have captured bandicoots on trail camera on the property...and a couple of cats 😡