From the point of view of their class, penguins are animals in the class of birds, so they belong to birds in terms of category. However, penguins do not have the ability to fly, so many people will mistakenly believe that penguins are not birds. In fact, penguins do belong to birds, but they are a special kind of flightless birds. They are relatively old and have existed for a very long time.
Although they can't fly, they still have some basic characteristics of birds. For example, birds have feathers on their body surface to keep warm, and penguins also have feathers, which are very effective in keeping warm. For example, birds generally use oviparous breeding, penguins also use oviparous breeding, and male and female penguins share the responsibility of hatching, will be hatched out after the little penguin will always accompany the little penguin side. Also, birds are generally warm-blooded animals, as are penguins, which can stabilize their body temperature at about 37 degrees.
The above has been introduced, although penguins are birds, but they can not fly. Although they do not have the ability to fly, they have other abilities, that is, the ability to swim. Penguins can not only swim, but also swim very well. This ability allows them to go down to the ocean and catch many animals for their food. Penguin's swimming ability is strong, because their body structure can adapt to the water environment, such as their forelimbs are like fish fins, swimming in the water more freely, and swimming faster.
