How did the Paleocene environment of Waimanu differ from the modern Antarctic habitat?

Answer

It was warmer than the Antarctic regions inhabited by modern penguins

The region surrounding what is now New Zealand during the early Paleocene epoch was notably warmer than the harsh, icy Antarctic home where many modern penguins reside. This climatic difference is an important factor when considering the ecological niche occupied by Waimanu, as it suggests the bird operated in a different thermal and geographical context than its descendants.

How did the Paleocene environment of Waimanu differ from the modern Antarctic habitat?
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