15 lines on birds in english
Answers
Birds (Aves) are a group of vertebrates which evolved from dinosaurs.
They are endothermic, with feathers.
Modern birds are toothless: they have beaked jaws.
They lay hard-shelled eggs.
They have a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
Birds live all over the world. They range in size from the 5 cm (2 in) bee hummingbird to the 2.70m (9 ft) ostrich.
More than half of these are passerines, sometimes known as perching birds.
Some birds, especially crows and parrots, are among the most intelligent animals. Several bird species make and use tools. Many social species pass on knowledge across generations, a form of culture.
Many species annually migrate great distances. Birds are social. They communicate with visual signals, calls, and bird songs. They have social behaviour such as cooperative breeding and hunting, flocking, and mobbing of predators.