I think that we tend to cherish our hedgehogs here. They're good slug, slater and snail foragers in the garden and so far as I know they're not a problem for native ground-dwelling birds such as the kiwi. Their real enemies are stoat and weasel, rats and feral cats, occasionally dogs.
Roger and I did a bit of a tour in the closer parts of Central Otago today, hoping to lose the coastal showers and drizzle but they followed us all day. We went to have a look at the Sutton salt lake but were caught in a thunder and lightning storm with a massive downpour so bolted back to the car.
There were very few plants of note, - not sufficient altitude, but lots of Aciphylla aurea, Bulbinella hookeri, matagouri (Hymenanthera species) and a little celmisia, probably C. gracilenta. They're still on the camera and I'll get them uploaded tomorrow.