I found both mom Kate and dad Petruchio in the nest this morning.
That is dad Petruchio looking out. You can see Kate to the left and toward the middle of the nest.
Petruchio went across the cove and around the bend, out of sight.
He re-appeared with a bunch of soft grasses for the nest.
Mom Kate had made a nest cup within the main nest before laying her egg(s).
The cup holds the egg(s) securely and keeps them from rolling into possible danger.
The egg cup is made of soft materials and the lining gets packed down.
The parents need to replenish the lining at least daily.
Petruchio delivering his bunch of nest materials.