Flight feathers on the tail and wing also become black and later, the pink colouration on the plumage typical of adults begins to appear Hancock JA, Kushlan JA, Kahl MP.
Flight feathers on the tail and wing also become black. The pink colouration on the plumage typical of adults begins to appear Hancock JA. This is later. Hancock JA is Kushlan JA. Kushlan JA is Kahl MP.