The biggest of all the birds on Earth, both in size and weight, is undoubtedly the ostrich. These behemoth birds grow up to 9 feet (2.7 meters) tall and can weigh up to 287 pounds
Although these birds might look like a juvenile ostrich, rhea are in fact their South American cousins. At only around one fifth of the size of an adult ostrich, rhea can still weigh an impressive 66 pounds
The southern cassowary is one of the most prehistoric-looking birds to prowl through New Guinea and mainland Australia. Towering up to 6 feet (2 meters) tall, cassowary's are one of the tallest bird
The Dalmatian pelican is not only the largest species of pelican but is one of the biggest flying birds in the world. With a wingspan of around 11 feet
Also known as whale-headed storks, shoebills are one of Africa’s strangest and tallest birds. These strange storks stand at around 5 feet
Great bustards are the largest land bird in Europe, but are also found in Central Asia, Russia and Morocco according to The Royal Society for the Protection of Birds
Of all the 18 species of penguins on Earth, emperor penguins are the biggest, according to the World Wildlife Fund (WWF). They stand around 4 feet (1.2 meters) tall and weigh around 88 pounds
The Andean condor is the largest species of raptor on the planet and the second-largest wingspan of any bird — which spans around 10.5 feet (3.2 meters), according to the San Diego