Their bodies are also streamlined for flight. They have a wide range of feet, depending on where they live and what they eat. Digestion A bird eats a great deal. They mainly eat insects and seeds, although some eat fruits and other animals. They take in water through their beaks and tip their heads back to swallow.
Beaks are in a variety of sizes and shapes, depending on the bird's diet.
A bird has a mouth, esophagus, stomach, crop, gizzard,intestines, liver and pancreas. Nervous A bird has relatively large eyes that allow it to judge distance well and an excellent sense of hearing. Their tongues are used to feel things. They have beautiful voices. They have a brain and spinal cord.