Задание 39 ЕГЭ по английскому языку

Birds live everywhere. They vary from pigeons in big cities to penguins in the Antarctic. However, all birds have similar features. For example, they all have wings. Still, not all of them can fly. All birds also have feathers. In fact, birds are the only living animals that have feathers. Birds build nests, in which female birds lay eggs. Birds are warm-blooded. It means that their body temperature stays about the same. It doesn't depend much on the temperature of their surroundings. Mammals, including humans, are also warm-blooded Birds have always fascinated people. Many people keep birds as pets. We also enjoy watching them in the wild or at zoos. In addition, farmers raise chickens, ducks and geese for their meat and eggs. Also, some people are quite fond of bird hunting.