What are the flightless birds?

In nature, there are some birds that cannot fly like other birds, but they can still move in other ways. Here are several types of flightless birds:

1. Ostrich: Ostrich is one of the most famous flightless birds. It is about 2-3 meters tall and weighs more than 100 kilograms. The wings of the ostrich are so small that they can only be used to balance the body and cannot be used for flight. They usually run on the ground and are very fast.

2. Penguins: Penguins live in Antarctica and surrounding waters. Their bodies are bulky and their wings have turned into powerful wing-like limbs, which are mainly used for swimming. Penguins can move quickly through the water and sometimes jump and glide on land.

3. Giant swans: Giant swans, also called whooper swans, are one of the largest waterfowl in the world. They have long and wide wings, but they cannot fly in the air due to their large size. The geranium usually swims in the water, with an elegant and light body.

4. Guinea chicken: Guinea chicken is a special kind of poultry with a huge body and gorgeous feathers, but its wings are very small and cannot be used for flying. Guinea chickens usually run on the ground.

In addition to the above-mentioned birds, there are also some flightless birds, such as moas, which are extinct birds that once lived on the earth in history.

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