I have three baby robins on the bathroom windowsill. I saw one blue egg, then two... (Where it's perched I'd have to hang my head out the window I think to see all of it!) SInce they hatched I only saw two little bits of fuzz, then a beak would wobble up from the fuzz when mama bird returned to the nest. The other day I saw three little birdie butts! I sure hadn't seen a third one before. Now they all chatter every so often, probably whenever mama comes back.
I've lost track of when I first saw they'd hatched. I thought not quite two weeks, but do they grow that fast??