I'm adopted??

I went out to photograph some small brown birds nest in my Norwegian weeping spruce. You can see what the nest looks like without moving any branches and you can see the eggs in the nest with the branches out of the way.
I moved to another spot and I see this Robin egg on the ground. I have no idea how long it has been there. But I figure I had 2 choices, sit on the egg for a while or move it to a nest.
I chose move it to the little brown birds nest.
I wonder how this will turn out?