Scientists Discover Extinct Shelduck Species on Rēkohu Chatham Islands

What's Happening?

Researchers from the University of Otago have identified a new extinct shelduck species on the Rēkohu Chatham Islands. The species, which evolved from ancestors that arrived 390,000 years ago, developed shorter wings and longer legs, indicating a trend towards flightlessness. This adaptation was influenced by abundant food, lack of predators, and windy conditions, making flight unnecessary. The Rēkohu shelduck, closely related to the paradise shelduck from New Zealand, became extinct before the 19th century due to over-hunting and predation. The study, published in the Zoological Journal of the Linnean Society, was a collaborative effort involving several international institutions.

Why It's Important?

The discovery of the Rēkohu shelduck adds to the understanding of how isolated environments can drive evolutionary changes in species. It highlights the impact of ecological factors on physical adaptations and the vulnerability of species to human activities. This research contributes to the broader knowledge of biodiversity and extinction patterns, offering insights into conservation strategies for current endangered species. The involvement of the Hokotehi Moriori Trust emphasizes the cultural significance of such discoveries and the importance of indigenous knowledge in scientific research.