Feathers are a defining characteristic of birds. They are made of keratin, the same protein that makes up human hair and nails. Feathers provide insulation, waterproofing, and the ability to fly.
2. Beaks
Beaks are another defining characteristic of birds. They are made of keratin and vary in shape and size depending on the bird's diet. Beaks are used for eating, grooming, and defense.
3. Wings
Wings are what allow birds to fly. They are made up of long bones, muscles, and feathers. Wings come in a variety of shapes and sizes, depending on the bird's flight habits.
4. Hollow bones
Hollow bones help birds to fly by reducing their weight. They also provide insulation and storage space for marrow.
5. A high metabolism
Birds have a high metabolism, which means that they need to eat a lot of food in order to maintain their energy levels. They spend much of their time foraging for food.
6. A keen sense of sight
Birds have a keen sense of sight, which helps them to find food and avoid predators. They can see objects that are far away and can even see ultraviolet light.
7. A strong sense of hearing
Birds also have a strong sense of hearing, which helps them to detect predators and communicate with each other. They can hear sounds that are too high-pitched for humans to hear.
8. A social nature
Many birds are social creatures and live in flocks. They communicate with each other using a variety of vocalizations and body language.
9. A long lifespan
Birds can live for a long time. Some species, such as the albatross, can live for over 60 years.