Rank the most unique birds in the earth

Wild nature is a big home for more than 10,000 species of birds. Among them, there are 'rare hard to find' species that have unique characteristics, separate from other birds. Review the top 7 unique birds in the world with the vote of Current Biology Magazine.

1. Kagu bird

New Caledonia island nation (1,200km north of Australia) is the main habitat of Kagu birds. Kagu is identified as the only surviving member of Rhynochetos and Rhynochetidae.

A pair of Kagu birds can live faithfully together for a lifetime. Most of the time of the year, males and females feed themselves. But when the breeding season comes, they come back together to hatch eggs.

Kagu also appears on stamps and coins in New Caledonia.

The strange point of the Kagu bird is the ' tiny nose' that no bird has. With small structures and shells around the nostrils, they can scavenge to find bait in the bushes, while preventing sand and dust from flying into the nose.

2. Frigate bird

Surely the Easter Island (Indian Ocean) is quite familiar to everyone but the Frigate birds are unlikely to be heard. Survival of birds The Frigate has been threatened by the crazy gold ants on the island. But now, their density and quantity have gradually stabilized.

With a very fast and accurate speed of surfing, the Frigate is known as the great predator. Once the target has been determined, no fish can escape their claws.

However, the special thing of this species is the skill of 'snatching' prey on the claws of predatory birds and other seagulls as soon as they are flying. Perhaps because of that, they also have a different nickname as 'non-hijackers of the sea'.

3. Philippine eagle

Philippine Eagle impresses especially by the title 'the world's largest giant bird of prey' with a height of about 1m and weighs 7kg. The eagle is also an expert hunter when no prey can escape its steel-like claws.

The Philippine eagle is about 1 meter tall and weighs 7kg, while the "smaller" male eagle - weighs about 5kg and 91cm high.

With such a large length and size, this eagle has chosen monkeys as prey as well as any animals that live within their hunting range.

On July 4, 1995, the bird was chosen by the Philippines as the country's mascot. If anyone "accidentally" kills a Philippine eagle, they will probably have a chance to think about their actions for two years in the prison.

4. Kakapo parrot species

Kakapo is the only parrot species in the flightless world with bright green fur and a slightly cat-like face. This is a nocturnal bird so it is not surprising that many people call Kakapo 'night parrots'.

Besides, Kakapo is the only parrot species in the world that only mate with their chosen mates. When choosing the 'lover' , the males will fight each other and the female will choose the male bird that I like the most 'husband'.

However, the strangest point in Kakapo is that they mate very little, sometimes every 2 years. Perhaps this is also a cause for this species to gradually become extinct.

Currently, the rest of Kakapo is quite small, only 124 individuals. So far, the prevention of extinction of this parrot is still attracting a lot of attention.

5. California ancient vulture

California ancient vulture is one of the world's longest-lived birds, with a life span of up to 60 years in the wild. Vultures are corpses, their main food is rotting flesh.

According to statistics in mid-2013, the number of ancient vulture vultures has increased almost 20 times with human help (237 wild and 198 individuals live in captivity).

California's ancient vulture is the largest winged bird in North America and is often mistaken for a small aircraft.

6. Oilbird bird

Bird oilbird (South American local language is guácharo) is a nocturnal bird that specializes in eating fruits and staying in caves. They search and locate food in echoes, quite similar to the way bats and dolphins. However, the difference is that humans can hear some sounds they emit.

Also, because of their names (oil-based English translation), oilbird has been hunted by humans for the purpose of extracting oil as fuel.

7. Hoatzin bird

This is the last species on the list and also the most unique bird in the world. Hoatzin is pheasant-sized, living in the Amazon and Orinoco plains.

Hoatzin is a 'vegetarian' bird. Their food is mainly leaves, fruits and flowers. Although they are quite frugal, they are also nicknamed 'stinking birds' because they smell like plant fertilizers. Perhaps that is why they escape human hunting because their flesh cannot be processed into food.

The special feature of this Hoatzin bird is also in its digestive food system. Hoatzin has a gut used to crush food and ferment with bacteria. Kite voting in Hoatzin was evolved with rumen functions in cows. This evolution made their kite very large, making them unable to fly as far as other species.

In addition, this only bird has claws growing on each wing. Claws on the wings help them stay away from the big black falcon. When the falcon attacks, Hoatzin parents will fly away to distract and the young birds will hide themselves under thick wing feathers.

Hoatzin parents will plunge into the water to die, while using their claws to cling, avoid drifting away. When the falcon leaves, they will use their claws to climb to the ground and fly to the nest.