Swallows are birds that are beneficial to human beings.
A swallow can catch hundreds of thousands of pests every year, which protects crops well. They are also used to catching pests. Only when spring comes will the swallows return to the warm south. They catch pests to fill their stomachs, that is, they can drive away pests and ensure food and clothing. There is a saying in the countryside that cats are poor, dogs are rich and swallows are prosperous, which shows that people like swallows very much.
Because swallows like to eat live insects and don't like to eat crops.
Swallows like to eat mosquitoes, flies, locusts, butterflies, moths, earthworms, caterpillars and other active foods. They generally don't like crops. It's a bit difficult to be a bird. Most young people eat those. After all, crops are protected by people, and it is not easy to eat them. Live insects are very delicious and nutritious for them. After all, insects can be found everywhere in the countryside.
Under normal circumstances, swallows will not eat food thrown by humans, and there are generally no domestic swallows.
Swallows usually like to catch food by themselves, but they don't like food raised by humans, which may not be to their taste. So they haven't kept this kind of animal for so many years, which is also due to their picky eaters. This is their nature of not eating crops, and they don't like being kept in captivity. When they are kept in captivity, they can't eat fresh insects.
Swallows are very willing to contact humans, and humans love them very much. There are countless articles about swallows, which shows that swallows are also very auspicious birds. Weeds are in full bloom next to Suzaku Bridge, and the sun sets at the corner of Wuyi Lane. Swallows under the eaves of Wang Dao and Xie An have now flown into the homes of ordinary people. A good description shows that swallows have been cherished since ancient times.