I’ve read that any eggs that don’t hatch or chicks that don’t survive get pushed out of the nest. Since this nest is above a concrete porch rather than a forest floor and nothing’s been pushed out I’m inclined to think there are actually four little guys in there.
I’m trying to disturb them as little as possible. Zip out the door and snap a few. They’re babies after all; they need their sleep.
Who can tell? It kind of looks like there are really four little guys in there. Fingers crossed.