What are extinct bird species?

Birds have evolved from a group of small predatory dinosaurs in the Jurassic period, 155 million years ago. The most famous extinct bird is also the oldest known bird, Archeopteryx . The first complete specimen was found in southern Germany in 1861. The fossil, which was about 0.5 m (1.6 ft) in length, has an intermediate product between dinosaurs and modern birds, which is the main example of temporary fossils. For example, it was covered with feathers, it had wide wings and the ability to fly, but its skeletal structure was more like a dinosaur and included "killing claws" on her feet. The existence of Archeopteryx has helped to support Darwin's arguments for evolution and a natural selection in a decisive time. Rates are no -flying birds with a similar type of body that are now represented by ostriches, emus, rheas, kiwis, cassowaries atinamic. African ostrich is the largest living bird, with the highest members of the species reaching a height of 3.3 m (10 ft) and a weight of 154 kg (340 lb).

Some of the extinct rattes were even larger, and in the case of a giant MOA, which lived in New Zealand up to 1500 years, it reached a height of 3.6 m (12 ft), in the case of a bird bird that lived up to 1500 years. Elephant Bird is the largest bird ever lived and was really as tall as an elephant.

Other categories of extinct bird, phorusrhacids or "terrorist birds" were dominant predators in South America for more than 60 million years, just after the extinction of dinosaurs 65 million years ago, up to 1.8 million years ago, when they were extinct. Terror birds were up to 3.3 m (10 ft), with skulls up to 0.7 m (2 ft). These massive skulls could be used to kill many mammals found in South America at that time with a single blow. Terror birds are the only category of extinct bird that we can be most grateful is extinct.