There's a third robin's nest. All the nests are fairly close. There are going to be territorial battles when the nestlings have to be fed. Robins can be ferocious when defending their turf. The nest is very funny, a spot used in previous years. This is a triplex, a nest built on a nest built on a nest.
We've also got a visiting oven bird right by the front door. The soil is rich in bugs and worms. The oven bird has been strolling in the front garden for two days. That's what they do, stroll.