Attributes / relations provided by
♦ 1Doroff, A., Badjeros, O., Corbell, K., Jenski, D. and Beaver, M. (2012).
Assessment of Sea Otter (Enhydra lutris kenyoni) Diet in Kachemak Bay, Alaska (2008-2010). IUCN Otter Spec. Group Bull. 29 (1): 15 - 23
♦ 2Wootton, J. Timothy. "Estimates and tests of per capita interaction strength: diet, abundance, and impact of intertidally foraging birds." Ecological Monographs 67.1 (1997): 45+. Academic OneFile. Web. 23 July 2010
♦ 3Prey selection and its relationship to habitat and foraging strategy of molting White-winged (Melanitta fusca) and Surf Scoters (M. perspicillata) in Puget Sound, WA, and the Strait of Georgia, BC., Heather J. Tschaekofske, Masters Thesis, Evergreen State College, 2010
♦ 4Jorrit 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.