Publications

The Beaverhill Bird Observatory has been monitoring our wild migratory bird populations since 1984, creating a large long-term database. Over the years, we have  collected data during spring and fall migrations, MAPS (Monitoring Avian Productivity and Survivorship) in the summer, maintained and monitored over 500 bird nest-boxes for tree swallows, house wrens and mountain bluebirds, as well established an ever growing number of bat roosting boxes and more. 

Through this data, many researchers are able discover new findings that help us better understand the natural world and how we can help conserve it. 

Below is a list of publications that the Beaverhill Bird Observatory has been involved with. 

 

Knight, S.M., E.A. Gow, D.W. Bradley, R.G. Clark, M. Bélisle, L.L. Berzins, T. Blake, E.S. Bridge, L. Burke, R.D.
          Dawson, P.O. Dunn, D. Garant, G.L. Holroyd, D.J.T. Hussell, O. Lansdorp, A.J. Laughlin, M.L. Leonard,
          F. Pelletier, D. Shutler, L. Siefferman, C.M. Taylor, H.E. Trefry, C.M. Vleck, D. Vleck, L.A.
          Whittingham,D.W. Winkler, D.R. Norris. 2019. Non-breeding season movements of a migratory
          songbird are related to declines in resource availability.Auk

 

Lehikoinen,A.,A. Linden, M.Karlsson, A. Andersson, T.L. Crewe,E.H. Dunn, G. Gregory, L. Karlssond, V.
          Kristiansen, S. Mackenzie,S. Newmanj, J.E. Roer, C. Sharpe, L. V. Sokolov, Å. Steinholtz,M.
          Stervander, I-S. Tirri, and R.S. Tjornlov. 2019. Phenology of the avian spring migratory passage in
          Europe and North America: Asymmetric advancement in time and increase in duration.
          Ecological Indicators 101: 985-991.

 

Macias-Duarte, A., C.J. Conway, G.L. Holroyd, H.E. Valdez-Gomez, M. Culver. 2019. Genetic variation among
          island and continental populations of Burrowing Owl (Athene cunicularia) subspecies in North America.
          Journal of Raptor Research 53(2):000–000

 

Gow EA, L. Burke, D.W. Winkler, S.M. Knight, D.W. Bradley, R.G. Clark, M. Be´lisle, L.L. Berzins, T. Blake8,
          E.S. Bridge, R.D. Dawson, P.O. Dunn, D. Garant, G. Holroyd, A.G. Horn, D.J.T. Hussell, O. Lansdorp,
          A.J. Laughlin, M.L. Leonard, F. Pelletier, D. Shutler, L. Siefferman, C.M. Taylor, H. Trefry, C.M. Vleck, D.
          Vleck, L.A. Whittingham and D.R. Norris. 2018. A range wide domino effect and resetting of the
          annual cycle in a migratory songbird. Proceedings (B) of the Royal Society Bulletin 286:2018.1916.
          http://dx.doi.org/10.1098/rspb. 2018.1916

 

Knight, S.M., D.W. Bradley, R.G. Clark, E.A. Gow, M.B. Elisle, L.L. Berzins, T. Blake, E.S. Bridge, L. Burke,
          R.D. Dawson, P.O. Dunn, D. Garant, G.L. Holroyd, D.J.T. Hussell, O. Lansdorp, A.J. Laughlin, M.L.
          Leonard, F. Pelletier, D. Shutler, L. Siefferman, C.M. Taylor, H.E. Trefry, C.M. Vleck, D. Vleck, D.W.
          Winkler, L.A. Whittingham, and D.R. Norris. 2018. Constructing and Evaluating a Continent-Wide
          Migratory Songbird Network across the Annual Cycle. Ecological Monographs, 0(0):1–16

 

Valdez-Gómez, H.E., G.L. Holroyd, H.E. Trefry and A.J. Contreras-Balderas. 2018. Home Ranges, Habitats,
          and Roosts of Wintering Burrowing Owls in Agricultural Landscapes in Central Mexico. Journal of
          Raptor Research, 52(2):178-190.

 

Booms, T.L., G.L. Holroyd, M.A. Gahbauer, H.E. Trefry, D. Wiggins, D. Holt, J.A. Johnson, S.B. Lewis, M.
          Larson, K.L. Keyes and S. Swengel. 2014. Assessing the Status and Conservation Priorities of the
          Short-eared Owls in North America. Journal of Wildlife Management 78(5):772-778.

 

Holroyd, G.L., A.J. Trefry and B. Crockett (eds.). 2014. Engaging People in Conservation, Proceedings of the
          10th Prairie Conservation and Endangered Species Conference, February 19 to 22, 2013 – Red Deer,
          Alberta. Alberta Prairie Conservation Forum, Lethbridge, Alberta. 320pp.

 

Holroyd, G.L. 2013. Habitat Succession and Bird Monitoring at BBO. The Willet 26(3):2-4. Beaverhill Bird
          Observatory, Edmonton, Alberta.

 

Framis, H., G. L. Holroyd and S. Mañosa. 2011. Home range and habitat use of Little Owl (Athene noctua) in
          an agricultural landscape in coastal Catalonia, Spain.
Animal Biodiversity and Conservation 34:369-378.

 

Holroyd, G.L. and H.E. Trefry. 2011. Tracking movements of Athene owls: the application of North American
          experiences to Europe. Proceedings of the Third International Little Owl Conference, Vic, Spain.
Animal
          Biodiversity and Conservation 34:379-387.

 

Holroyd, G.L. and H.E. Trefry. 2011. Great things come in small packages - tracking burrowing owls from
          their northern breeding range. Beaverhill Bird Observatory, Willet 24(1): 2-3.

 

Holroyd, G.L. and H.E. Trefry. 2011. Habitat of a ‘Canadian’ burrowing owl wintering in Baja. Willet 24(1): 3-4.

 

Holroyd, G.L., and H.E. Trefry. 2010. The Importance of Isla Clarion, Archipelago Revillagigedo, Mexico, for
          Green Turtle (Chelonia mydas) Nesting. Chelonian Conservation and Biology 9(2):305-309.

 

Valdez-Gomez, H.E., G.L. Holroyd, H.E. Trefry, and A.J. Contreras-Balderas. 2009. Do the winter diets of
          sympatric Burrowing Owl and Short-earedOwl overlap in west-central Mexico?Proceedings of the
          Fourth International Partners in Flight Conference: Tundra to Tropics, University of Texas-Pan
          American Press, Edinburg, Texas, pp. 96-101.

 

Valdez, E., Holroyd, G.L. H.E. Trefry, and A. Contreras. 2009. Informe de activitidades por permiso de
          investigacion y colecta ceintifica de Tecolete de Clarion (Athene cunicularia rostrata). University of
          Neuvo Leon, Monterray, MX.

 

Holroyd, G.L. and H.E. Trefry. 2008. The Travels Of A Short-Eared Owl Equipped With A Satellite Transmitter
          In Canada. Blue Jay 66(1):28-30.

 

Priestley, L., C. Priestley and G.L. Holroyd. 2008 A Short-eared Owl Invasion at Beaverhill Lake, Alberta in
          Winter 2005-06. Blue Jay 66(3):131-138.

 

Holroyd, G.L. and H.E. Trefry. 2007. A Brief Study of the San Isidro Owl (Strix spp.), Ecuador. Report for
          Beaverhill Bird Observatory, Box 1418, Edmonton, Alberta, T5J 2N5.

 

Priestley, L. and G. Holroyd. 2006. Grassland Birds along Beaverhill’s Lake’s shoreline. Edmonton Nature
          News 3(1):23-24.

 

Valdez, E., G., .Holroyd and H. Trefry.2006. Historias de Campo-Dos Semanas despues. Especies 15(4):12-14.

Priestley, C., and L. Priestley. 2005. Results of a Northern Saw-whet Owl Migration Monitoring Pilot Study in
          Central Alberta, Canada. Western Birds 36(4):303-309.

 

Holroyd, G.L. [Ed.]. 2005. North American Conservation Action Plan for Burrowing Owls. Commission for
          Environmental Cooperation, Montreal, 44pp.

 

Priestley, L. and G. Holroyd. 2005. Bird Population Changes in Drought at Beaverhill Lake. Report to Alberta
          Conservation Association. Beaverhill Bird Observatory, Edmonton. 14pp.

 

Duxbury, J. and G.L. Holroyd. 2004. North American Conservation Action Plan for Burrowing Owl. Beaverhill
          Bird Observatory, Edmonton, produced for CEC, Montreal.

 

Holroyd, G.L. 2002. In Memory – Elson Olorenshaw. Alberta Naturalists 32 (4) 130.

 

Krikun, R.G. and G.L. Holroyd. 2001. Beaverhill Lake Important Bird Area Conservation Plan. Beaverhill Bird
          Observatory for Federation of Alberta Naturalists, Edmonton, 27pp.

 

Takats, D. Lisa, Charles M. Francis, Geoffrey L. Holroyd, James R. Duncan, Kurt M. Mazur, Richard J.
          Cannings, Wayne Harris, and Denver Holt. 2001. Guidelines for North American Nocturnal Owl
          Monitoring - A Recommended Standard Protocol. Beaverhill Bird Observatory and Bird Studies Canada,
          Edmonton. 21pp

 

Valdez-Gomez, H.E. and G.L. Holroyd.2000. El Tecolote llanero, sus habitos y distribution, en el centro-oeste
          de Mexico. Boletin de Sociedid de Ciencas Naturales de Jalisco 1(2):57-63.

 

Bilyk, J.N., M. Barr and G.L. Holroyd. 1998. Migratory and summer bird-habitat associations of the Beaverhill
          Lake Landscape. Beaverhill Bird Observatory, Edmonton, AB. 62pp.

 

Dowell, B., G.L. Holroyd, and C.S. Robbins. 1994. An interim report on field investigations or birds of eastern
          Guatemala. Unpub. National Biological Survey, Maryland.

 

Dunn, P.O. 1989. The maintenance of monogamy in Black-billed Magpies and Tree Swallows. PhD.
          Department of Zoology, University of Alberta, Edmonton, AB. 114pp.

 

Quinn, M.S. 1989. Factors regulating the breeding population, reproductive success and mating system of
          House Wrens at Beaverhill Lake, Alberta. MSc. Department of Forest Science, University of Alberta,
          Edmonton, AB. 113pp.

 

Quinn, M.S. and G.L. Holroyd. 1989. Nestling destruction by House Wrens. Condor 91:206-207.