Small flock of Canada Geese are shown here feeding in a shallow bay on aquatic plants. They were displaying behaviour more commonly seen in "dabbling ducks" where the head and neck are submerged while the body tips with rear-end pointing up. I think the reason for this behaviour was for the Geese to access aquatic plants that were now deeper since the surface mats had died off.
(Photographed November 13, 2014 on lower Chemong Lake, Emily Township, City of Kawartha Lakes, Ontario, Canada)