List of largest birds
The largest extant species of bird measured by mass is the common ostrich, closely followed by the Somali ostrich. A male ostrich can reach a height of and weigh over, A mass of has been cited for the ostrich but no wild ostriches of this weight have been verified. Ostrich eggs are the largest of any bird, averaging.
The largest wingspan of any extant bird is that of the wandering albatross of the Sub-Antarctic oceans. The largest dimensions found in this species are an approximate head-to-tail length of and a wingspan of.
The largest bird of all time was likely the elephant bird Aepyornis maximus, which was estimated to have weighed and stood at tall.
The largest wingspan of all time likely belonged to Pelagornis sandersi at roughly 5.2 m. P. sandersi was also likely the largest bird to ever fly.
Largest extinct birds
Table of heaviest extinct bird species
Largest extant birds
Table of heaviest extant bird species
The following table is a list of the heaviest extant bird species based on maximum reported or reliable mass, with the average weight is also given for comparison. These species are almost all flightless, having denser bones and heavier bodies. Flightless birds comprise less than 1% of all extant bird species.| Rank | Common name | Binomial name | Average mass | Maximum mass | Average total length | Flighted |
| 1 | Barbary ostrich | Struthio camelus camelus | No | |||
| 2 | Somali ostrich | Struthio molybdophanes | No | |||
| 3 | Southern cassowary | Casuarius casuarius | No | |||
| 4 | Northern cassowary | Casuarius unappendiculatus | No | |||
| 5 | Emu | Dromaius novaehollandiae | No | |||
| 6 | Emperor penguin | Aptenodytes forsteri | No | |||
| 7 | Greater rhea | Rhea americana | No | |||
| 8 | Dwarf cassowary | Casuarius bennetti | No | |||
| 9 | Lesser rhea | Rhea pennata | No | |||
| 10 | King penguin | Aptenodytes patagonicus | No | |||
| 11 | Wild turkey | Meleagris gallopavo | , domestic | Yes ; No | ||
| 12 | Trumpeter swan | Cygnus buccinator | Yes | |||
| 13 | Wandering albatross | Diomedea exulans | Yes | |||
| 14 | Mute swan | Cygnus olor | Yes | |||
| 15 | Dalmatian pelican | Pelecanus crispus | Yes | |||
| 16 | Kori bustard | Ardeotis kori | Yes | |||
| 17 | Whooper swan | Cygnus cygnus | Yes | |||
| 18 | Andean condor | Vultur gryphus | Yes | |||
| 19 | California condor | Gymnogyps californianus | Yes | |||
| 20 | Great bustard | Otis tarda | Yes |
By order">Order (biology)">order
Birds of prey ([Accipitriformes])
- New World vultures are generally considered belonging to this order, although their inclusion is not accepted by all. If included, the largest species of this order, based on body weight and wingspan, is the Andean condor of western South America. The Andean condor can reach a wingspan of and a weight of.
- Excluding New World vultures, the largest extant species is the Eurasian black vulture. The Eurasian black vulture can attain a maximum weight of, a height of up to, and a wingspan of. Other vultures can be almost as large, with the Himalayan vulture reaching lengths of up to due to its long neck.
- The largest living member of this order, in terms of length and height, is the secretarybird of sub-Saharan Africa. It measures in height and in length. Its wingspan can reach and have a weight of.
- The largest predatory bird, specifically the largest eagle, is a source of contention.
- * The harpy eagle of neotropical forests is often cited as the most massive eagle, with wild females up to in weight and captive females occasionally growing to weights of over.
- * The Steller's sea eagle of Asia's North Pacific, with unconfirmed weights of up to, and an average weight of, is sometimes regarded as the heaviest eagle.
- * The up to Philippine eagle has the greatest length of any eagle. The harpy and Philippine eagles, due to having to navigate in deep forest, are relatively short-winged and do not exceed, respectively, in wingspan.
- * The golden eagle is of marginally larger wingspan, with the Himalayan subspecies recorded at.
- * The white-tailed eagle measures in length with a wingspan. Its wingspan, with a midpoint of, is on average the largest of any eagle.
- * The white-tailed eagle is sometimes considered the fourth-largest eagle in the world, and is on average the fourth-heaviest.
- * The martial eagle is the largest eagle in Africa, and the fifth-heaviest eagle in the world, with a length of, a weight of and a wingspan of.
- * The longest wingspan of an eagle recorded was an Australian wedge-tailed eagle at. However, less substantiated records indicate that the Steller's sea eagle may reach at least.
- * The now extinct Haast's eagle, which existed alongside early indigenous people in New Zealand, was by far the largest eagle known and perhaps the largest raptor ever. Adult female Haast's are estimated to have averaged up to in length, weighing up to, with a relatively short wingspan.
- The largest of the accipitrine hawks is the Eurasian goshawk of temperate Eurasia. They range in size variably, but on average measure in length, have a wingspan of and weigh. The Henst's goshawk and Meyer's goshawk do rival it in terms of wing size and body mass.
- Among the buteonine hawks, the largest species are the ferruginous hawk and the upland buzzard of North America and Asia respectively. The former can have a wingspan of, weigh and measure in length. The weight of the upland buzzard, which can be in the range of, broadly overlaps that of the ferruginous hawk, even though it is slightly larger at long and with a wingspan of.
- The swamp harrier of Australasia is believed to be the largest species of harrier, measuring long, having a wingspan of and weighing.
- The largest species of kite is the red kite. With a wingspan of, it measures in length and weighs.
Waterfowl ([Anseriformes])
- The largest waterfowl species by average size is the trumpeter swan of Northern North America, which can reach a length of, a wingspan of and a weight of. The heaviest single waterfowl recorded was a cob from Poland which weighed, and was allegedly too heavy to take flight.
- The largest species of goose is the Canada goose, more specifically the subspecies known as the giant Canada goose. Individuals can reach more than in weight.
- The largest 'duck' species is the Muscovy duck of the Americas. Males can weigh from and can measure up to. However, its genus is now considered to be paraphyletic with the species currently being placed in the subfamily Tadorninae. If so, the largest species of the true ducks or dabbling ducks is the mallard. They can measure in length, have a wingspan of and a weight of.
Swifts and allies ([Apodiformes])
- The largest species of Apodiformes is the white-naped swift, endemic to southern Mexico, and the purple needletail, of the Philippine islands. Both reach weights of up to, lengths of up to and wingspans as long as.
- Traditionally included in this order, by far the largest hummingbird species is the giant hummingbird of the Andes Mountains. "Giant" is a relative term among the hummingbirds, the smallest-bodied variety of birds, with the giant hummingbird species weighing up to with a length of.
- The longest hummingbird species, indeed the longest in the order, is the adult male black-tailed trainbearer, which can measure up to. The majority of this length is due to the hummingbird's extreme tail streamers. Another size champion among hummingbirds is the sword-billed hummingbird, a fairly large species of which approximately half of its length derives from its bill. This is by far the largest bill-to-body-size ratio of any bird.
Hornbills, hoopoe, and wood-hoopoes ([Bucerotiformes])
- The largest species of Coraciiformes is the southern ground hornbill, which can weigh up to and grow as long as. Several arboreal, Asian hornbills can also grow very large, with the great hornbill weighing up to, and the helmeted hornbill measuring as much as in total length. The larger hornbills have a wingspan of up to.
Nightjars and allies ([Caprimulgiformes])
- The largest species of this order of nocturnal birds is the neotropical great potoo, which can grow to a weight of and a height of. Heavier Caprimulgiformes have been recorded in juvenile specimens of the Australian tawny frogmouth, which can weigh up to. Other species nearly as large as the potoo are the Papuan frogmouth of New Guinea and the neotropic, cave-dwelling oilbird, both growing as large as. The wingspan of the great potoo and the oilbird can be more than, the largest of the order.
- The largest species of the nightjar family, the great eared nightjar of East Asia, is of smaller proportions. Great eared nightjars can reach in weight and in height.