Do gray swallows need to cut feathers?

Gray swallows are usually cage, so they do not need to cut feathers.This kind of bird is a kind of silk bird. Usually artificial breeding is to listen to the sound, and it is rarely trained. However, in order to prevent it from flying away, it is also possible to cut off some flying feathers.It should be noted that the feather is usually cut to the feather tube. Do not cut it from the root. This can easily hurt the birds and even bleed.