The word "emu" first appeared in English around the 1610s, but its ultimate origin is disputed. The most commonly cited etymology traces it to Portuguese ema, a word used for large birds — possibly the rhea of South America or the ostrich of Africa — which Portuguese explorers then applied to the similar flightless bird they encountered in Australia. However, some scholars have proposed an Arabic origin, and others suggest it may derive from an unrecorded Australian Aboriginal language.
The confusion extends to early European references. The word "emu" was initially applied inconsistently by European naturalists, sometimes referring to the cassowary rather than the bird now known as the emu. The two species — both large, flightless Australian birds — were frequently conflated in early accounts. Linnaeus used the name Casuarius for both before the distinction was clarified and Dromaius became the accepted genus name for the emu (from Greek dromaios, meaning swift runner, cognate with "dromedary").
The emu (Dromaius novaehollandiae) is the second-tallest living bird, reaching heights of up to 1.9 metres, and can sprint at speeds exceeding 50 km/h. Like the ostrich, it is a ratite — a member of the group of flightless birds whose ancestors lost the ability to fly after the dinosaur extinction freed them from predation pressure. The emu is endemic to Australia and holds a position of national significance, appearing alongside the kangaroo on the Australian coat of arms. Both animals
The "Great Emu War" of 1932 remains one of the most extraordinary incidents in the history of wildlife management. When approximately 20,000 emus invaded the wheat-growing region of Western Australia's Campion district, destroying crops, the government responded by deploying soldiers of the Royal Australian Artillery with Lewis guns. The operation was a comprehensive failure: the emus dispersed when fired upon, proved remarkably resistant to bullets (their thick plumage absorbed shots that would have felled other animals), and reformed in smaller, more elusive groups. After several embarrassing weeks, the military withdrew. Subsequent
The word's uncertain etymology mirrors the broader pattern of animal names from the age of European exploration: names assigned hastily by navigators, traders, and naturalists, often borrowed from one language, applied to the wrong animal, and corrected (or not) over subsequent centuries.