Reference: Melo, M., Jones, P. J., & de Lima, R. F. (2022). The Avifauna of the Gulf of Guinea Oceanic Islands. In L. M. P. Ceríaco, R. F. de Lima, M. Melo & R. C. Bell (Eds.), Biodiversity of the Gulf of Guinea Oceanic Islands (pp. 555–592). Springer Cham.