Pat,

Bathing moderately can be done daily. If your bird isn't used to a bath, it may take a little while before it becomes accustomed to it. Try placing a shallow bowl of water in the cage and see if it will bathe itself. If not, tepid water sprayed from a plastic bottle works great. One warning, don't let the bird chill.

If bathing doesn't appear to help, it may be something else. Keep an eye on the picking.