The emu.
The second largest bird (by height) is the emu.
The Emu is the second largest bird in the world compared to the ostrich.
Auk
daw
Bomb
The Goliath bird eater is considered to be the second largest spider in the world. It is a tarantula specie.
An Australian bid with three letters is the "emu".
Emu.
petrel
The Emu is a flightless bird with three letters in its name.
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 bird is a Moa. You can read more at: http://en.wikipedia.org/wiki/Moa Cheers!