1. Some birds have tender and flavorful meat, which is a delicious food for people. Bird eggs are also rich in nutrients for human consumption;

2. Some birds are natural pest hunters and are good helpers for farmers;

3. Birds are also forest guards, and birds play an important role in feeding on many forest pests, and bird droppings contain a large amount of nitrogen and phosphorus compounds, which are high-quality organic fertilizers;

4. Some birds can help people to fish and hunt;

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5, the bird's feathers can not only do down jacket, down quilt to people to protect the cold, but also can be made into badminton, but also can do beautiful decorations.