The Family Dinornithidae, commonly known as the Moa family, was a group of flightless birds that were native to New Zealand. There are several synonyms that have been used over the years for these extinct birds, including Aepyornithidae, a name originally used to describe the elephant bird family in Madagascar. Another synonym is Megalornithidae, which was once used to describe a family of large flightless birds that were native to North America. However, the most commonly used synonym for the Family Dinornithidae is simply the Moa family, as these birds were among the most well-known and studied of all the extinct bird groups.