This is a small portion of about 500 American Coots that were at the south end of Rondeau Bay back in October.
A gathering of coots is called a cover.
Although it swims like a duck, the American Coot does not have webbed feet like a duck. Instead, each one of the coot’s long toes has broad lobes of skin that help it kick through the water. The broad lobes fold back each time the bird lifts its foot, so it doesn’t impede walking on dry land, though it supports the bird’s weight on mucky ground.
The oldest known American Coot lived to be at least 22 years 4 months old.
source - Cornell Lab of Ornithoogy