Harrison, P. (1985). Seabirds: an identification guide. Revised edition. Christopher Helm Publisher. A & C Black: London, UK. ISBN 0-7136-3510-X. 448 pp.
GBIF Backbone Taxonomy. doi:10.15468/39omei
Accessed via http://www.gbif.org/species/1108 on 2016-08-25
This backbone name usage is included because it was found in another checklist at the time the backbone was built. The primary source name usage (121102057) has since been removed from the portal.
This record was last modified on Jul 25, 2016.