sub:Provenance { sub:Assertionprov:wasDerivedFromsub:Study . sub:Studydcterms:bibliographicCitation "Vermeer, K. and N. Bourne. 1984. The White-winged Scoter diet in British Columbia waters: resource partitioning with other scoters. In Marine birds: their feeding ecology and commercial fisheries relationships (eds DN Nettleship, GA, Sanger & PF Springer), pp. 30-38. Ottawa, ON.: Canadian Wildlife Service Special Publication." . }