Birds also have mafia

Don't think that only human society has criminal organizations. Biologists have demonstrated in the society that birds also have mafia hands, protecting other species against wild birds (raptors) and being paid fair food.

An interesting group of anthropologists from Bristol , Cambridge and Captown universities has discovered: In birds as well as in humans, there are 'preserved' birds. They advocate for other birds and live on the food that the benefactor brings. They have closely observed the two populations of birds living in South Asia and East Asia - the black oars and Cambodian rock flute .

The mafia bird is typically black-backed (scientific name Dicrurus macrocercus ) is a close relative of the crow, living in India, Sri Lanka, Indonesia, Philippines, Vietnam, small, black body often seen in the forest and rural, often flying with cattle like cattle and buffalo, catching flies and mosquitoes on large cattle. In addition to insects they also eat animal corpses, fruits and seeds. They live in swarms, not far from each other next to the nest of golden birds, cuckoo, flute . not afraid of those who often cause this.

The black moose is the typical "mafia" bird.

Do not let go of raptors to their territories and their familiar neighbors. If you see the figures of cut birds, magpie, hawks, eagles hovering in the sky, they immediately report to each other and the battlefield. This brave bird always chases the invaders much bigger and stronger than them. So many types of birds who know how to stay close to paddling are protected and voluntarily nestled next to rowing.

But sometimes, rowing also contests the food of other birds. The most bully is the Cambodian starling (scientific name Sturnus burmannicus ). They also live in groups, organized, they can repay the attacks of rowing, but they do not. Previously scientists thought that flutes were shy and fearful, but they recently found the true cause of this relationship.

Rock flute makes a good way to go rowing, always looking for a way to live close by knowing how to swim without any raptors. To stole food is just a way to make a salary for your 'preserver'. Although both species are omnivores, they like insects the most. Therefore, the flute was 'mouthed' in order to save insects for rowing.

Scientists have observed that when living together, listening to the alarms typical of the rowing, the rock star still calmly prey on it without ever hiding into the nest.

They did the following experiment: When the stone flute was searching for prey without rowing by their side, they emitted a distinctive alarming sound of the rowing and recording, even though the hawks were flying, they were still completely peaceful. static, did not bother to look up and just panic when realizing. Andrew Radford, head of the research team explained: Two species learn to symbiotic with each other during evolution. Self-seeking, unreliable rowing can not be earned as much as the number of starlings' pay. Spending on specialization .

'Payments' are insects that a stone flute earns. They do not swallow but release, leaving right on the grass. Poor go just eat. But the paddle is also very meager. Occasionally, they make false alarms, make true stone flute and thus, have a good meal.

Scientists find that this is a win-win relationship. The "false alarm" times are much less than the "real alarm". That is the basis for the cooperation between the two types of long-term persistence.