The site comprises a c.8 km stretch of rugged cliffs along the south-western coast of the island of Santiago, from the fishermen’s village of Porto Mosquito to Baia do Inferno (Baia de Santa Clara), a large and relatively well-sheltered bay. The average height of the cliffs is c.30 m, but at Baia do Inferno they rise to 200 m and are exceedingly steep.
See Box for key species. The colony of Sula leucogaster on the southern cliffs of Baia do Inferno is the largest in Cape Verde and holds c.300 pairs (1988 estimate). Scattered pairs of Phaethon aethereus breed along this stretch of coast, the steepness of the cliffs explaining their survival. Together with some other scattered pairs which occur elsewhere along the coast, Santiago now holds about a quarter of the current total population of 100–125 pairs in Cape Verde. One or two pairs of Pandion haliaetus and some pairs of Egretta garzetta also breed along the cliffs.
Non-bird biodiversity: None known to BirdLife International.
BirdLife International (2019) Important Bird Areas factsheet: Coastal cliffs between Porto Mosquito and Baia do Inferno. Downloaded from http://www.birdlife.org on 18/08/2019.