The bill is black or bluish-grey, with a ring of white feathers at its base, the iris is golden, and the feet are pinkish-red to crimson. Both sexes are similar, but females have darker grey and pink colours.
The bill is dark or slate-grey, with a band of white feathers at its base, the iris is golden, and the feet are reddish-pink to scarlet. Both sexes are similar, but females have darker grey and pink hues.