The so-called "Moa's Ark" theory - that New Zealand's animal and plant life has evolved largely untouched over 80 million years since the Gondwana supercontinent broke up - is being challenged by new molecular evidence from native birds. Dr Steve Trewick and Gillian Gibb, from the Institute of Natural Resources, have carried out a review of the molecular phylogenetic evidence for New Zealand's bird life... According to the review of the data, Dr Trewick says we must continue to rethink the way the biota (animal and plant life) developed and recognise that it has changed considerably over time. "Many New...