Top 7 Heaviest Birds In The World

According to scientists, there are around 9,000 to 10,000 species of birds that exist on this earth. This species can be distinguished by its looks, shape, color, behavior, and size.

The size of these birds differ according to their species and the smallest bird in the world will be the hummingbird bee with a maximum size of 6 centimeters. However, there are still many birds out there with sizes and weights much bigger than an adult human.

Here we would like to share with you the top 7 heaviest birds in the world.

7. Great Rhea

Average weight: 23kg (50lb)

Maximum weight: 40kg (88lb)

It is commonly found in the east of the South American region and the greater rhea or American rhea is a species of flightless bird. Its habitat is mainly the open grass field and it is categorized as the biggest bird in South America.

The great rhea has a lifespan of only 10.5 years and reaches a maximum weight of 40kg with a height of 1.32 meters.

6. Penguin Emperor

Average weight: 31.5kg(69.4 lbs)

Maximum weight: 46kg(101.4 lbs)

This cute and flyless creature is also categorized as a bird. Among many types of penguin species, the Penguin Emperor is the heaviest of them all. It lived in Antarctica where both males and females have similar fur and size.

One of the only penguins that breed in the winter can reach a height of 122 centimeters with a maximum weight of up to 46kg. The lifespan of a Penguin Emperor is 50 years on average.

5. Emu Bird

Average weight: 33kg(72.7 lbs)

Maximum weight: 70kg(154.3 lbs)

It is an animal native to Australia and Emu is also a flightless bird that eats plants and insects. Emu is also one of the tallest birds in the world reaching a height of 190 centimeters and can run at a maximum speed of 50 km/h(31 miles/h).

The Emu bird can grow up to 70kg in weight and there are about 700,000 of its population across the globe.

4. Northern Cassowary

Average weight: 44kg(97lbs)

Maximum weight: 75kg(165.3 lbs)

The northern cassowary is the 4th biggest bird in the world and also among the heaviest ones out there. It can reach a maximum weight of 75kg and can be found in the low rainforest of Batanta Island, Slalawati, Yapen, and Northern New Guinea.

3. Southern Cassowary

Average weight: 45kg(99.2 lbs)

Maximum weight: 85kg(187.3 lbs)

Southern cassowary or its other name, the Australian cassowary is the third heaviest bird in the world. This creature belongs to an endangered species group which is said to be only 2,500 left in the world.

Aside from Australia, this bird can also be found in Indonesia and New Guinea. The main difference between a southern cassowary and a northern cassowary will be their neck color in which the southern one has a blue neck while the northern one has a red neck.

The southern cassowary is a bit heavier with a maximum weight of 85kg.

2. Somalian Ostrich

Average weight: 90kg(198.4 lbs)

Maximum weight: 130kg(286.6 lbs)

The Somalian ostrich is a subspecies of common ostriches that are generally found in the African land of Somalia. It was classified as a different species than the common ostrich in 2014.

There is a slight difference in its body compared to other ostriches in which its neck has a mix of blue and grey in color. As the second heaviest bird in the world, the Somalian ostrich can reach a maximum weight of 130kg.

1. Common Ostrich

Average weight: 104kg(229.3 lbs)

Maximum weight: 156.8kg(345.7 lbs)

As some of you might have expected, the common ostrich is the heaviest bird on the planet. It is commonly found all over Africa and it is one of the animals belonging to the Struthio genus that still lives.

Its maximum weight can reach a whopping 156.8 kg which is equivalent to 2 regular adult males. Aside from being the heaviest bird alive, it also lays the heaviest egg in the world with a weight of 2.589 kg.


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