Attributes / relations provided by
♦ ¹Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ ²CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database
♦ ³Niche Partitioning, Distribution And Competition In North Atlantic Beaked Whales, Colin D. MacLeod, A thesis submitted to the School of Biological Sciences for a degree of Doctor of Philosophy at the University of Aberdeen, Aberdeen, UK. January 2005
♦ ⁴THE WINTER DIET OF THE GREAT-WINGED PETREL PTERODROMA MACROPTERA AT SUB-ANTARCTIC MARION ISLAND IN 1991, JOHN COOPER & NORBERT T.W. KLAGES, Marine Ornithology 37: 261–263 (2009)
♦ ⁵ADAM J. BESTER, DAVID PRIDDEL & NICK I. KLOMP, Diet and Foraging Behaviour of the Providence Petrel Pterodroma solandri Marine Ornithology 39: 163–172 (2011)