In accord with AOS-NACC (Chesser et al. 2021), the nomenclature of cormorants and shags, and the sequence of genera and species, are revised, following Kennedy and Spencer (2014) and Kennedy et al. (2019). The new sequence of genera is Poikilocarbo, Urile, Phalacrocorax, Gulosus, Nannopterum, and Leucocarbo. Change the scientific name of Guanay Cormorant from Phalacrocorax bougainvillii to Leucocarbo bougainvillii.