We've been watching for a couple of weeks as a robin built a nest on the front porch. I climbed up on a ladder this afternoon to take a peek. Mother bird was furious with me and screeched from a nearby tree. She may be upset because they might be ready to hatch. Looks like a little area on one of the eggs might have a hole in it.
(Or it's just bird doo).
We'll keep an eye on things and let you know when we have babies.