The toes are not webbed; they're lobed. When the grebe pulls its foot forward through the water, the toes fold up. Then when it pushes back the toes open. Pretty good swimming idea. Yet it can't paddle as quickly as the ducks. It actually swims faster below the water than at its surface.
I'd love to watch the grebes during the breeding season. The male's call sounds like laughter. Sadly, they're endangered in my state due to habitat loss.
Stay tuned for more pied billed grebe goodness... ____________________________________ *If this is your pic, let me know so I give proper credit.