First birds – victims of dinosaurs

First birds - victims of dinosaurs - Microraptor_575_AL

First birds – victims of dinosaurs

First birds – victims of dinosaurs – Paleontologist Jingmal O’Connor made in China discovery,
that the first
birds were victims of representatives of the dinosaurs.

– “125 million years ago, dinosaur Microraptor Gui hunted and devoured entirely
representative of
primitive birds from the group Enantiornithines.
The find
confirms our belief that the dromerosaurs lived on the trees.

Birds made sounds

Birds made sounds - Indian birdBirds made sounds - Bird Respiration

Birds made sounds

Birds made sounds – Birds make sounds using a special organ called the lower larynx. Situated at the end of the trachea, it has no vocal cords, such as mammals. Their function is performed membrane located in the trachea and bronchi major. A loud sound is made possible by strengthening it in the air sacspecial tabs lungs. In addition, organ voice bird consists of two parts which can work independently of each other, and some species are able to sing at the same time two different melodies. Many species of birds there is no organ voice, and the sound from such dates. Clatter of the bow (storks) or hitting with various hard objects (woodpeckers).

Aggression among animals

Aggression among animals - Hippos fighting in Amboseli National Park

Aggression among animals

Aggression among animals – Many species of animals avoiding battles, shows aggression usually defending the defenseless young. Musk oxen during the attack of wolves to protect offspring by surrounding them with a circle forming on the outside wall with sharp corners. Blackbirds attack cats located near their outlet. Sow boar in fear of children can compel a man to flee to the tree.

Eye evolution

Eye evolution

Eye evolution

Eye evolution – We see the world around us through opsins – proteins containing photosensitive dyes, produced by the receptors of the retina. In humans and other animals with type chordates Branchiostoma lanceolatum, fish, amphibian, reptile or bird. The variety is known as copsin. Meanwhile, in arthropods and cephalopods so the spiders and octopuses. This is the function differently built r-opsin. So it looks as if nature created two different ways of development of sight, at a very early stage of evolution.

Formation V

Formation V - Flock of birds Type V

Formation V

Formation V – The formation of V-shaped, which forms a plurality of types of birds during their migration, is not random. The exact biomechanical study showed that individual birds by trial and error looking for the best place next to a neighbor in the key.From this point of view the formation of the V-shape is most effective, but the members of the formation to increase its effectiveness by coordinating flapping wings. So that there is between the specified time difference.

Huge bird – Prehistoric huge bird confirmed

Huge bird - Pelagornis sandersi

Huge bird – Prehistoric huge bird confirmed

Huge bird – Researchers from England confirmed the existence of a huge bird. Whose wingspan exceed 6 m. According to the researchers was the bird with the largest wingspan of all known bird species. Prehistoric species pelagornis sandersi was 2-fold greater than today‘s largest bird of the royal albatross, whose wingspan is 3.5 m.

Corvids abilities – can learn simple math

Corvids abilities - Crow (Corvus corax)Corvids abilities - Rook (Corvus frugilegus)

Corvids abilities – can learn simple math

Corvids abilities – The researchers found that the birds of the crow family (Corvidae), which includes ravens, crows, rooks, jackdaws and many other species, understand the importance of a few human words. Ravens and rooks even know how to count at least seven and can learn simple math, such as addition and subtraction. Moreover, Crow recognize herself in the mirror.