| S.No |
Heaviest Bird Name |
Weight in kg |
| 1 |
Ostrich |
104 to 156.8 |
| 2 |
Somali ostrich |
90 to 130 |
| 3 |
Southern cassowary |
45 to 85 |
| 4 |
Northern cassowary |
44 to 75 |
| 5 |
Emu |
33 to 70 |
| 6 |
Emperor penguin |
31.5 to 46 |
| 7 |
Greater rhea |
23 to 40 |
| 8 |
Domestic / wild turkey |
13.5 to 39 |
| 9 |
Dwarf cassowary |
19.7 to 34 |
| 10 |
Lesser rhea |
19.6 to 28.6 |
| 11 |
Mute swan |
11.87 to 23 |
| 12 |
Great bustard |
10.6 to 21 |
| 13 |
King penguin |
13.6 to 20 |
| 14 |
Kori bustard |
11.4 to 20 |
| 15 |
Trumpeter swan |
11.6 to 17.2 |
| 16 |
Wandering albatross |
11.9 to 16.1 |
| 17 |
Whooper swan |
11.4 to 15.5 |
| 18 |
Dalmatian Pelican |
11.5 to 15 |
| 19 |
Andean condor |
11.3 to 14.9 |
|