Can any care be provided for a birds eggs?

My neighbors have a birds nest in their front yard deck in which I’m assuming my cat knocked over because the eggs are scattered on the floor and I am worried that the postal worker is going to walk by and step on them. I noticed a dead bird on the grass, I think it’s the mother bird.

I don’t want my neighbors to know their was a bird with it’s eggs in the nest. The last time they checked the nest, it was empty. They won’t be coming back until this Saturday, so it is no big deal, I could always hang the birds nest back in it’s place, but I don’t know what to do with the eggs.