Bird in my flower pot of marigolds

This morning, while I was outside on the deck staining a bookcase, a very bold female robin landed in a pot of marigolds on my deck as if it was a nest and just sat there much like the robin in this photo I found online. I should have gotten my camera and snapped a pic, and will if she comes back and lands there again. I think maybe she wants to next in the pot. I tried to shoo it away and it didn't budge. It was as if it was just daring me to get closer! So, I just left her be and she sat there for a whole 20 minutes. It was very strange. I never saw a bird do that before, except starlings that would not vacate my gas grill a few years ago.