Animal Family: Dinornithidae

About the Dinornithidae Family

The parent order is Dinornithiformes.

Step into the extraordinary past and explore the unique world of the Dinornithidae family, an extinct group of flightless birds endemic to New Zealand, commonly known as moa. These magnificent creatures were once the dominant herbivores in their ecosystems, playing a crucial role in the shaping of the New Zealand landscape.

What truly sets Dinornithidae apart is their sheer size and their complete lack of wings, a remarkable evolutionary adaptation to an environment free of mammalian predators. Unlike most birds, moa evolved to fill ecological niches typically occupied by large mammals, leading to the development of robust, column-like legs and powerful musculature. Their unique sternum, lacking a keel, further underscores their flightless nature.

Members of the Dinornithidae family shared several common traits that facilitated their terrestrial existence. All moa species were flightless and possessed strong legs adapted for walking and running. They were herbivorous, with fossil evidence suggesting a diet of leaves, twigs, fruits, and seeds. Their gizzard stones, or gastroliths, found alongside their remains, indicate a powerful digestive system capable of processing tough plant material. Despite variations in size among species, from the turkey-sized lesser moa to the towering giant moa, they all shared this fundamental suite of adaptations that defined their success as large, flightless browsers of ancient New Zealand.

Other Orders

There are many different orders based upon their class. To learn more about classification orders, click here.