How to raise gray swallows

Gray swallows usually choose birds first. Usually the male voice is better, and the color is better.If you usually feed, you can choose Xiaomi or vegetable leaves, which can also let it eat some small bugs.In addition, it is best to put this bird in a cage to prevent it from escaping, and can also place water irrigation to allow birds to eat drinking water by themselves. Usually, the bird cage needs to be hung at a high place.