Kiwis are the last group of Ratites. They are easily distinguished because they are far smaller than their relatives and because they have their nostrils at the tip of their bills not near the base. They are only found in New Zealand.
Cassowaries are the most colourful of the ratites. Their black bodies, blue heads and red wattles make them easy to identify. There are three species, all of which are found in Papua New Guinea.
Emus Dromaius novaehollandiae are the second largest of the world's birds being 1.5-1.8 m (5-6 ft) tall with adult females weighing 41 kg (90 lbs). Males are slightly smaller.
Rheas are the South American version of the Ostrich and on the Pampas they fulfil a similar ecological niche, feeding mainly on vegetation, but taking insects and small vertebrates when possible.
There is only one species of Ostrich, Struthio camelus. It is a remarkable bird holding several world records. It is the largest bird in the world being both the heaviest and tallest.
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