Is an ostrich a bird? The flightless ostrich is also a bird

The ostrich is a bird, and there is no dispute about this in taxonomy. It belongs to the class Aves, order Struthioniformes, and is the largest living bird, as well as a flightless ratite. Many people are puzzled because it cannot fly, but actually the standard for judging whether an animal is a bird is not whether it can fly.

The basic characteristics of birds include a body covered in feathers, feeding with a beak and having no teeth, being oviparous, being warm-blooded, and breathing with lungs and air sacs. The ostrich fully possesses these characteristics: its whole body is covered in feathers, it reproduces by laying eggs, and its body temperature remains constant. It is only because of its relatively large body weight, degenerated wings, and the lack of a keel on its sternum for the attachment of flight muscles that it has lost the ability to fly and instead relies on its strong legs to run.

In terms of appearance, the ostrich has a long neck, long legs, keen eyesight, and only two toes on each foot, which is very unique among birds. It runs fast and can adapt to dry, open environments. Other large flightless birds include the rhea, emu, cassowary, and kiwi, and they are often collectively called ratites or flightless birds, but the ostrich in the strict sense generally refers to the common ostrich.

In terms of uses, the ostrich's meat, eggs, leather, and feathers all have value, and artificial breeding has been carried out in many regions. During breeding, spacious exercise areas and well-ventilated pens are needed, and special attention must be paid to warmth and disease prevention during the chick-rearing stage, while adult birds are relatively tolerant of coarse feed. Overall, the ostrich is a bird with distinctive characteristics, and being unable to fly does not affect its identity as a bird.