But may I ask you about genetics in a serious mode at a later date?

I have some queries you may be able to answer.

I will post you when I get time, if I may.

Found this in wikipedia;

Heard Island and McDonald Islands (abbreviated as HIMI [1]) are uninhabited, barren islands located in the Southern Ocean, about two-thirds of the way from Madagascar to Antarctica. They have been territories of Australia since 1947, and contain the only two active volcanoes in Australian territory, one of which, Mawson Peak, is the highest Australian mountain. The group's size is 372 kmĀ² in area.