What is the economy of New Zealand like?

Before Humans came to New Zealand, most of the land was dense forest, it was full of a vast range of Wild life mainly birds. No mammals existed in Nz until the arrival of people. Most of the forest has been cleared now for humans. There were mountain ranges such as Southern Alps and still is. The Maori's knew to build their villagers near the coast, because of lowland and not so dense forest.