Ryder Bay is located on the southeast coast of Adelaide Island. The IBA qualifies on the basis of the large breeding populations of south polar skua (Catharacta maccormicki) and Antarctic shag (Leucocarbo [atriceps] bransfieldensis) and comprises the ice-free ground east of the buildings forming the scientific station at Rothera Point (Adelaide Island), Killingbeck Island, the Léonie Islands (Léonie, Kirsty, West Lagoon, East Lagoon, Mucklescarf, Trolval, Anchorage and Donnelly islands), Mikkelsen Islands (including Skart Island) and adjacent islets.
Richard Phillips, British Antarctic Survey.
BirdLife International (2023) Important Bird Area factsheet: Ryder Bay Islands. Downloaded from http://datazone.birdlife.org/site/factsheet/ryder-bay-islands-iba-antarctica on 02/12/2023.