I have seen a couple of southern boobooks  around this area and I really think they must be one and the same bird. I have looked in several bird books and cannot find a mention of a particular Tasmanian species although they are apparently smaller and more heavily spotted with white.

The photos I have seen of the Liptrap owl have very distinctive yellow eyes so perhaps that is the difference.

They are probably more commonly known as a Mopokes because of the very distinctive calls you will hear coming from the bush at night. There is also a New Zealand species known as Moreporks, once again known by their calls.

When I was a kid and lived near the bush, mopokes were very common and we were quite used to them.​

​A few years ago I was walking in the Baldhills Reserve and came across some grey fantails making a great fuss. On investigating, I discovered a southern boobook with two young beside her calmly watching the whole attempt to chase her off.

Graeme Chapman has some good information on southern boobooks.
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