It depends on what is meant by "second largest", and whether this refers to height or weight.
The emu is the second-tallest bird, averaging 1.6 to 2 metres in height. Its nearest rival is the Southern Cassowary which averages 1.5 to 2 metres. Next to the emu, it looks distinctly shorter and stockier. The Southern Cassowary, however, tends to be heavier. Emus range between 30 and 45kg in weight, whilst the Southern Cassowary averages 50-60 kg.
The ostrich, which is also the largest bird on Earth not currently extinct.
The second largest bird (by height) is the emu.
The Emu is the second largest bird in the world compared to the ostrich.
The ostrich is the largest bird on Earth, and it is also a flightless one.
Currently, the largest bird in the world is the Ostrich, but before the Ostrich there were even bigger birds like the Moa and the Elephant Bird. Unfortunately, these birds are extinct. The Moa became extinct in the 1800s, and the Elephant Bird (Aepyornis gracilis) became extinct in htye 1700s.
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The Goliath bird eater is considered to be the second largest spider in the world. It is a tarantula specie.
The Andean Condor has the second largest wingspan of any bird, after the Wandering Albatross. The Andean Condor's wingspan can reach up to about 10.5 feet.
The emu.
The 2nd largest bird on earth is the harpy eagle .
The second largest bird, by weight, is the Southern Cassowary, found in Australia and New Guinea. The Southern Cassowary tends to be heavier than the emu. Emus range between 30 and 45kg in weight, whilst the Southern Cassowary averages 38 - 48kg. The largest bird, by weight, is the ostrich,
That would be the ostrich. Big bird indeed. An adult male can weigh around 340 lbs.