Great Blue Heron Ardea herodias

Ross G. Vennesland and Robert W. Butler
Version: 1.0 — Published March 4, 2020
Text last updated April 28, 2011

About the Author(s)

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About the Author(s)

Robert Butler, born in Vancouver, Canada, has been a birder for most of his life. He studied biology at Simon Fraser University (B.S. and M.S.) and zoology at the University of British Columbia (Ph.D.). His doctoral thesis examined timing of breeding and habitat selection of Great Blue Herons. In 1979, he joined the Canadian Wildlife Service in British Columbia where he is now a research scientist. Butler's books include: The Birds of the Fraser River Delta: populations, ecology and international significance (with R. W. Campbell, 1987);  The ecology and status of marine and shoreline birds in the Strait of Georgia, British Columbia (with K. Vermeer, 1989); and The ecology and status of marine and shoreline birds on the West Coast of Vancouver Island, British Columbia (with K. Vermeer and K. Morgan, 1992). Current address: Canadian Wildlife Service, PO Box 340, Delta, BC V4K 3Y3, CANADA.

Ross Vennesland was born in Vancouver, Canada, and has been studying Great Blue Herons and other birds since the 1990's. He studied biology and biogeography at Capilano University and Simon Fraser University, culminating with a M.S. degree in 2000. Ross' interests are in the realms of behavioral ecology and conservation biology. Since 2000, Ross has worked as a consultant and for various government agencies. Currently he is the Species at Risk Recovery Specialist for Parks Canada in Vancouver. His current address is 300-300 West Georgia St, Vancouver, B.C., V6B 6B4, CANADA. Email: .

Recommended Citation

Vennesland, R. G. and R. W. Butler (2020). Great Blue Heron (Ardea herodias), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.grbher3.01