Gregory J. Robertson

10 published articles

• Dec 2025

  Estimating regional trajectories and trends of seabirds from sparse and inconsistent colony counts: case studies from eastern Canada with Leach’s Storm-Petrel and Atlantic Puffin

  David T. Iles, Sarah E. Gutowsky, Anna M. Calvert, Sabina I. Wilhelm, Jean-François Rail, April Hedd, Heather L. Major, Adam C. Smith, Gregory J. Robertson
• Sep 2023

  Redistribution of wintering American Common Eiders (Somateria mollisima dresseri)

  Sarah E. Gutowsky, Gregory J. Robertson, Mark L. Mallory, Nic R. McLellan, Scott G. Gilliland
• Apr 2023

  Experts’ opinions on threats to Leach’s Storm-Petrels (Hydrobates leucorhous) across their global range

  Ingrid L Pollet, Ariel K Lenske, Anne N. M. A. Ausems, Christophe Barbraud, Yuliana Bedolla-Guzmán, Anthony W. J. Bicknell, Mark Bolton, Alexander L. Bond, Karine Delord, Antony W. Diamond, David A. Fifield, Carina Gjerdrum, Luke R. Halpin, Erpur S. Hansen, April Hedd, Rielle Hoeg, Heather L. Major, Robert A. Mauck, Gregory T. W. McClelland, Laura McFarlane Tranquilla, William A. Montevecchi, Mike Parker, Isabeau Pratte, Jean-François Rail, Gregory J. Robertson, Jennifer C Rock, Robert A. Ronconi, Dave Shutler, Iain J. Stenhouse, Akinori Takahashi, Yukata Watanuki, Linda J. Welch, Sabina I. Wilhelm, Sarah N. P. Wong, Mark L. Mallory
• Feb 2023

  Quantifying gull predation in a declining Leach’s Storm-petrel (Hydrobates leucorhous) colony

  Alexander L. Bond, Sabina I. Wilhelm, Donald W. Pirie-Hay, Gregory J. Robertson, Ingrid L Pollet, Jillian L. Arany
• Apr 2021

  Effects of land-based light pollution on two species of burrow-nesting seabirds in Newfoundland and Labrador, Canada

  Sabina I. Wilhelm, Suzanne M. Dooley, Emma P. Corbett, Michelle G. Fitzsimmons, Pierre C. Ryan, Gregory J. Robertson
• Aug 2015

  Apparent survival of adult Leach’s Storm-petrels (Oceanodroma leucorhoa) breeding on Bon Portage Island, Nova Scotia

  Danielle T Fife, Ingrid L Pollet, Gregory J. Robertson, Mark L. Mallory, Dave Shutler
• Sep 2013

  A Synthesis of Human-related Avian Mortality in Canada

  Anna M. Calvert, Christine A. Bishop, Richard D. Elliot, Elizabeth A. Krebs, Tyler M. Kydd, Craig S. Machtans, Gregory J. Robertson

• Mortality of Migratory Birds from Marine Commercial Fisheries and Offshore Oil and Gas Production in Canada

  Joanne I. Ellis, Sabina I. Wilhelm, Gail S. Fraser, Gregory J. Robertson, Jean-François Rail, Mark Fowler, Ken H. Morgan
• Dec 2009

  Contrasting Population Trends at Two Razorbill Colonies in Atlantic Canada: Additive Effects of Fox Predation and Hunting Mortality?

  Jennifer L. Lavers, Ian L. Jones, Gregory J. Robertson, Antony W. Diamond
• Dec 2007

  Colony Dynamics and Persistence of Ivory Gull Breeding in Canada

  Gregory J. Robertson, H. Grant Gilchrist, Mark L. Mallory