Cassowary vs emu vs ostrich: size comparison
The ostrich is the largest of these three flightless birds, followed by the emu and then the cassowary. You can visualize their scale by comparing the ostrich's 8.2 ft (2.5 m) height to the 5.74 ft (1.75 m) height of the emu and the 5.25 ft (1.6 m) height of the cassowary.
Biggest vs smallest
1.56× the size
ostrich vs cassowary
- cassowary
- about 3.94 ft (1.2 m) long and 5.25 ft (1.6 m) tall · 110 lb (50 kg)
- emu
- about 4.27 ft (1.3 m) long and 5.74 ft (1.75 m) tall · 81.6 lb (37 kg)
- ostrich
- about 6.89 ft (2.1 m) long and 8.2 ft (2.5 m) tall · 265 lb (120 kg)
Typical adult or standard sizes; real ones vary.
Questions people ask
- Which bird is the heaviest?
- The ostrich is the heaviest, weighing 265 lb (120 kg).
- How long is an emu?
- An emu is about 4.27 ft (1.3 m) long.
- How much does a cassowary weigh?
- A cassowary weighs 110 lb (50 kg).