Battey, C.J. 2019. Ecological Release of the Anna's Hummingbird during a Northern Range Expansion. The American Naturalist 94:306-315

Campbell, R.W., N.K. Dawe, I. McTaggart-Cowan, J.M. Cooper, G.W. Kaiser, and M.C.E. McNall. 1990b. The Birds of British Columbia Vol. 2: Nonpasserines: Diurnal Birds of Prey through Woodpeckers. Royal British Columbia Museum, Victoria, BC.

Moran, A. and D.F. Fraser. 2015. Anna's Hummingbird in Davidson, P.J.A., R.J. Cannings, A.R. Couturier, D. Lepage, and C.M. Di Corrado (eds.). The Atlas of the Breeding Birds of British Columbia, 2008-2012. Bird Studies Canada. Delta, B.C.

Scarfe, A. and J.C. Finlay. 2001. Rapid second nesting by Anna's Hummingbird near its northern breeding limits. Western Birds 32:131-133.

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