Pleistocene Ice Age
During the Pleistocene Ice Age only a small portion of New Zealand was covered
by glaciers but, with the colder weather, plants and animals struggled. Many plants
and animals adapted to the colder climate
At the end of the last glacial period, about 10 000 years ago, there was hardy
any forest left and most areas were covered by shrubland. The ensuing warmer
weather helped the forest regain the land again and provided habitat for the birds
and other animals still recovering from the glaciation.
Between 7000-1000 years ago, the climate cooled, causing the glaciers to advance
again. The beech tree strived due to the cooler weather and also to increased
rainfall. Ever since 1000 years ago, the glaciers have been retreating.