Birds are not always small and light. Some birds may be surprisingly large, and the largest may be even taller than ordinary humans.
Giant among birds: ostrich
It is about 2.5m high and weighs about 150kg
Among the birds, the “giant” is an ostrich. Its height is higher than that of ordinary humans, and its wing spread width can reach 2 meters. The flying ability of ostrich has been lost in the long evolution, but its feet have become strong. It can jump 2.5 meters high. At the same time, it has super running ability. The running speed can reach 70 km / h. It is the fastest animal in the world with two legs.
Eggs are compared with ostrich eggs.
Ostrich eggs are also the largest existing eggs in the world. The volume of an ostrich egg is equivalent to about 20 ordinary eggs.
War winner: EMU
It is about 1.9m high and weighs about 35kg
EMU (ER mi á o) is the national bird of Australia and the second largest bird in the world. EMU eggs are not only large (the volume of an EMU egg is equivalent to about 10 eggs), but the eggshell is rare blue-green.
Comparison of EMU eggs and eggs.
EMUs are agile and have defeated the army. In the late 1930s, there were too many EMUs in Australia, resulting in a lack of food and fresh water, so the Army decided to shoot EMUs. The soldiers used machine guns to shoot the EMU, but the EMU escaped the bullet at high speed and easily. The soldiers ran out of ammunition and finally had to retreat.
Polar giant bird: Emperor Penguin
It is about 1.2m high and weighs about 46kg
Emperor penguins live in the cold Antarctic and are the largest individual species in the penguin family. The “yellow collar” on the neck is their symbol. Emperor penguins are the only penguin species that breed in the harsh Antarctic winter. In order to resist the severe cold, they grow thick feathers with the highest density in the world.
Emperor penguins can’t fly and run slowly, but they are very good at swimming. Researchers once observed an emperor penguin diving 564 meters underwater, which is the deepest diving record of birds in the world; Another emperor penguin dived for 32 minutes, the longest record for birds.
Dangerous “killer bird”: eating turkey
It is about 1.8m high and weighs about 58kg
Turkey, also known as “killer bird”, is the most dangerous bird in the world. They have strong legs and a pair of big claws, and their sharp nails can give a fatal blow to the enemy like a dagger. Turkeys are usually very shy, but when they are harassed, they will jump up, attack the enemy with their legs, easily gut the enemy with their claws, and kill small animals with one kick. They have caused many serious injuries and even deaths in Australia.
Heaviest bird: wart nosed Swan
It is about 1.2m high and weighs about 12kg
Y ó u-nosed swans are the heaviest birds. Their weight is close to the weight limit of birds. Although their wingspan can reach 2 meters, it is still difficult for them to take off. Unlike small birds, they only need to spread their wings and push their legs hard to soar into the sky. Their take-off is a little clumsy – they have to go through a long runway and “nine pedals and eighteen planing” to produce enough take-off speed.
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