Shift change at the grebe nest

I visited the pied-billed grebes at Green Lake this morning. I found one on the nest, which looks larger and sturdier than it did last week.

Then another arrived, and adjusted the edges of the nest while the first one rose off the eggs.

Looks like there are at least seven eggs in there.

With one off and swimming away, the second one climbs on.

It makes small adjustments to the nest...

And sits.