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1. Great Black-backed Gull Larus marinus

   ML205303011 eBird checklist S65103037 Report
   
   rating 4

   4 ratings

   David Gascoigne

   22 Dec 2014

   Halton, Ontario, Canada
   Media notes Resting at the edge of lake Ontario with Ring-billed Gulls. Elevation: 76 m. Dat…
2. Great Black-backed Gull Larus marinus

   ML205288531 eBird checklist S65103037 Report
   
   rating 4

   4 ratings

   David Gascoigne

   22 Dec 2014

   Halton, Ontario, Canada
   Media notes Individual on a rock with ice in the background. Elevation: 76 m. Date added to …