RAGLAN, Aotearoa New Zealand — Imagine a forest floor so thick with juicy, crunchy purple tawa (Beilschmiedia tawa) fruit in summertime that you can’t cross it without skidding and falling. Birds so fat with toromiro (Pectinopitys ferruginea) berries that they explode when you shoot them. Pigs that don’t bother to dig in the ground because there’s so much food on top of it for the taking. For elder Māori of the Tūhoe Tuawhenua and Ngāti Whare iw…