[Jerome Betts]

Thanks, Martin. If it ever reappears I’ll change rats in S1 to mice. Apparently rats never got to Mana and it was house mice that reached plague proportions before eradication.
There’s a lot more going on than gannet-luring on this former sheep farm, such as partial re-afforestation, restoration of a wetland and the revival or reintroduction of many plant, insect, reptile animal and bird species with the aim of returning it to more or less its original ecological state before human intervention
Seabird guano provides a rich source of nutrients ultimately benefiting the other island populations, hence the concrete colony which has captured the world’s interest because of Nigel.
http://www.manaisland.org.nz/mana-island-2/mana-island-ecology/
https://en.wikipedia.org/wiki/Mana_Island_(New_Zealand)