Checking on our Swan Mother in the evening

All seemed well.  The Father Swan was not around tonight, but the friendly duck couple was there with her.
I had walked in a different way to take pictures.
I found this on the ground near the river

Is it a Killdeer eggshell?

The Mother Swan nestled in for the night.
Do you see the ducks in the water nearby?    
Goodnight, Swan.  ♥Chloe