Adult Sabine's Gull at Penticton, British Columbia

Adult Sabine's Gull in breeding plumage southbound on Lake Okanagan at Penticton BC. 9 September 2018. This High Arctic breeder is a treat any day. Action video of Sabine's Gull on water and flying

Sabine's Gull still in breeding plumage at Penticton on 8 September 2018

Upper wing pattern.

Link to better open wing photos on our eBird Checklist