Do I need to cut feathers?

The three treasure birds are raised in cage and do not need to cut feathers.Shearing feathers is generally to prevent birds from flying away. If the cage is not very open, don't worry about this happening. If you really want to cut, you can cut off some of its flying feathers, so that the flight ability will be reduced.It should be noted that the feathers must be symmetrical, how much to cut on the left and how much should be cut on the right so that the birds can be balanced.