Robins were much busier than us this rainy weekend

A few years ago robins built a nest on this same ladder. That year it was on the top step (just below where they are now). It ended badly for the nest, it was knocked down very soon after completion. Hopefully this year the penthouse step will work out! Baby robins would be quite fun! Nest are really amazing feats of construction! especially when your only tool is a beak!