A lot of the birds were immatures, at various stages of moulting into adult plumage. I think I have one with just one baby feather still showing and I know I have another with a full head and neck of baby brown. They all seemed to have what in Norwegian is called "nringsvett" (wisdom enough to eat), although I did see some clumsy ones drop a berry now and then. Too bad I didn't catch any of those moments on camera.