will they love me forever? I want to find a way to mark the birds so I know certain facts or conditions about them by sight. I would stay with the dark colors, black, brown, yellow maybe dull green. I know to avoid red, pink or even orange because of picking, . I would think that painting a nail or 2 shouldn't cause a picking issue, stink eyes. yes. If someone else has tried this and has a comment I would like to hear it. And I already know I am weird.