Canadian Wildlife Service, BC Environment. Wildlife Branch, Campbell, R. W., Rodriguez, I., Tyrrell, C., Chow, F. J., . . . Symons, M. H. (1997). The birds of British Columbia. UBC Press.
Tohutoru Kātū Chicago (17th ed.)Canadian Wildlife Service, et al. The Birds of British Columbia. Vancouver, British Columbia: UBC Press, 1997.
Tohutoro MLA (9th ed.)Canadian Wildlife Service, et al. The Birds of British Columbia. UBC Press, 1997.
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