Top 10 Heaviest Living Birds in the Earth

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Rank Animal Average mass [kg (lb)] Maximum mass[kg (lb)] Average total length[cm (ft)]
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1 Ostrich 104 (230) 156.8 (346) 210 (6.9)
2 Southern Cassowary 45 (99) 85 (190) 155 (5.1)
3 Northern Cassowary 44 (97) 75 (170) 149 (4.9)
4 Emu 33 (73) 70 (150) 153 (5)
5 Emperor Penguin 31.5 (69) 46 (100) 114 (3.7)
6 Greater Rhea 23 (51) 40 (88) 134 (4.4)
7 Dwarf Cassowary 19.7 (43) 34 (75) 105 (3.4)
8 Lesser Rhea 19.6 (43) 28.6 (63) 96 (3.2)
9 King Penguin 13.6 (30) 20 (44) 92 (3)
10 Kori Bustard (male) 14 to 19 kg (31 to 42 lb) 20 kg (44 lb)

Source: http://en.wikipedia.org/wiki/List_of_largest_birds

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