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The largest and heaviest birds – Top 10

The largest and heaviest birds – Top 10

The following list contains the heaviest living birds. Most of them are flightless. Flightless birds comprise less than 2% of all living bird species. On the list are four flying species, the Dalmatian pelican, Great bustard, Kori bustard and Trumpeter swan.

The heaviest living birds – Top 10

13. Dalmatian pelican (Pelecanus crispus) – 15 kg (33.1 lb)

  • Length: 160 to 183 cm (5 ft 3 in to 6 ft 0 in)
  • Wingspan: 290–345 cm (9 ft 6 in–11 ft 4 in)
  • Mass: 7.25–15 kg (16.0–33.1 lb)
Dalmatian pelican (Pelecanus crispus)
Dalmatian pelican (Pelecanus crispus).

12. King penguin (Aptenodytes patagonicus) – 20 kg (44 lb)

  • Height: male: 70–100 cm (2 ft 3.56 in–3 ft 3.37 in)
  • Mass: male: 11 to 16 kg (24 to 35 lb); max 20 kg (44 lb)
King penguin (Aptenodytes patagonicus)
King penguin (Aptenodytes patagonicus).

11. Great bustard (Otis tarda) – 21 kg (46 lb)

  • Height: male: 90–105 cm (2 ft 11 in–3 ft 5 in); female: 75 to 85 cm (2 ft 6 in to 2 ft 9 in)
  • Length: male: 115 cm (3 ft 9 in); female: 90 cm (2 ft 11 in)
  • Wingspan: male: 2.1–2.7 m (6 ft 11 in–8 ft 10 in); female: 180 cm (5 ft 11 in)
  • Mass: male: 5.8 to 18 kg (13 to 40 lb); max 21 kg (46 lb)
Great bustard (Otis tarda)
Great bustard (Otis tarda).

10. Trumpeter swan (Cygnus buccinator) – 23 kg (51 lb)

  • Length: male: 138–180 cm (4 ft 6 in–5 ft 10 in)
  • Wingspan: male: 1.85 to 3.1 m (6 ft 1 in to 10 ft 2 in)
  • Mass: male: 7–13.6 kg (15–30 lb); max 23 kg (51 lb)
Trumpeter swan (Cygnus buccinator)
Trumpeter swan (Cygnus buccinator).

9. Kori bustard (Ardeotis kori) – 23 kg (51 lb)

  • Height: male:  71–120 cm (2 ft 4 in–3 ft 11 in); female: 60 cm (2 ft 0 in)
  • Length: male: 120 to 150 cm (3 ft 11 in to 4 ft 11 in); female: 80 to 120 cm (2 ft 7 in to 3 ft 11 in)
  • Wingspan: male: 2.3 to 2.75 m (7 ft 7 in to 9 ft 0 in); 177 to 220 cm (5 ft 10 in to 7 ft 3 in)
  • Mass: male: 7 and 18 kg (15 and 40 lb); max 23 kg (51 lb); female: 3 to 7 kg (6.6 to 15.4 lb)
Kori bustard (Ardeotis kori)
Kori bustard (Ardeotis kori).

8. Darwin’s rhea (Rhea pennata) – 28.6 kg (63 lb)

  • Height: male: 90 to 100 cm (35–39 in)
  • Length: male: 92 to 100 cm (36–39 in)
  • Mass: male: 15 to 28.6 kg (33–63 lb)
Darwin's rhea (Rhea pennata)
Darwin’s rhea (Rhea pennata).

7. Dwarf cassowary (Casuarius bennetti) – 34 kg (75 lb)

  • Height to the top of the head: 105 cm (3.4 ft)
  • Height at shoulders: male: 80 cm (2 ft 7.5 in)
  • Length: male: 99 and 150 cm (3.25 and 4.92 ft)
  • Mass: male: 17.6 and 26 kg (39 and 57 lb), max 34 kg (75 lb)
Dwarf cassowary (Casuarius bennetti)
Dwarf cassowary (Casuarius bennetti).

6. Greater rhea (Rhea americana) – 40 kg (88 lb)

  • Height to the top of the head: male: 150 cm (4.9 ft). max 183 cm (6.0 ft)
  • Length: male: 127 to 140 cm (50 to 55 in), max 150 cm (59 in)
  • Mass: male: 20–27 kg (44–60 lb), max 40 kg (88 lb)
Greater rhea (Rhea americana)
Greater rhea (Rhea americana).

5. Emperor penguin (Aptenodytes forsteri) – 45.4 kg (100 lb)

  • Height to the top of the head: male: 110–130 cm (43–51 in)
  • Mass: 22.7 to 45.4 kg (50 to 100 lb)
Emperor penguin (Aptenodytes forsteri)
Emperor penguin (Aptenodytes forsteri).

4. Emu (Dromaius novaehollandiae) – 70 kg (150 lb)

  • Height to the top of the head: male: 139 to 164 cm (55 to 65 in), max 190 cm (6.2 ft)
  • Height at shoulders: 100 to 130 cm (3.3–4.3 ft)
  • Mass: 18 – 60 kg (40 to 132 lb), max 70 kg (150 lb)
  • Females are usually larger than males
Emu (Dromaius novaehollandiae)
Emu (Dromaius novaehollandiae).

3. Northern cassowary (Casuarius unappendiculatus) – 75 kg (170 lb)

  • Height to the top of the head: 150–180 cm (4.9–5.9 ft)
  • Length: 149 cm (4.89 ft)
  • Mass: male: 30 to 37 kg (66 to 82 lb); female: 58 kg (128 lb), max 75 kg (170 lb)
Northern cassowary (Casuarius unappendiculatus)
Northern cassowary (Casuarius unappendiculatus).

2. Southern cassowary (Casuarius casuarius) – 85 kg (187 lb)

  • Height to the top of the head: 150 – 180 cm (4.9–5.9 ft); max 190 cm (75 in)
  • Length: 1127 to 170 cm (50–67 in)
  • Mass: male: 29 to 34 kg (64–75 lb); female:  58.5 kg (129 lb), max 85 kg (187 lb)
Southern cassowary (Casuarius casuarius)
Southern cassowary (Casuarius casuarius).

1. Common ostrich (Struthio camelus) – 156.8 kg (346 lb) – the largest and heaviest living bird

  • Height to the top of the head: male: 210 to 280 cm (6 ft 11 in to 9 ft 2 in); female: 1.7 to 2.0 m (5 ft 7 in to 6 ft 7 in)
  • Wingspan: 2 m (6 ft 7 in)
  • Mass: 63 to 145 kilograms (139–320 lb), average 115 kg (254 lb) in males and 100 kg (220 lb) in females, max 156.8 kg (346 lb)
Common ostrich (Struthio camelus)
Common ostrich (Struthio camelus) – the largest and heaviest living bird.

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