Dinornitidae is a bird species in the ostrich order of the terror bird family. The abdominal feathers are yellow, and the other parts are yellow and black in color. Enlarged body, degeneration of upper limbs, and short and thick lower limbs; The neck is covered with feathers and is relatively short; There are three toes. In 1843, it was named the terror bird by Owen, meaning a large bird that can scare people. Resting in the primitive lowlands and coastal forest grasslands of the southern islands of New Zealand. Living as a couple, each pair has their own territory. Cannot fly, runs slower than ostriches. They feed on berries, grass seeds, and roots, and sometimes also collect some insects. It is one of the largest birds on Earth.