Sula sula

All three species of booby on Ascension have circumtropical distributions. Red-footed Booby is the rarest of the three booby species on Ascension; there are less than 20 pairs of this species on the island. Most are found on the west cliffs of Boatswainbird Island, although occasional pairs can also be found on stacks off the north-west coast and in Cocoanut Bay. The majority of birds are, as in this example, white morph while brown morph birds account for about 10% of the population.