From the Audobon site on Carolina Wrens.
Incubation is by female only, 12-16 days; male may feed female during incubation. Young: Both parents bring food for nestlings. Young leave nest about 12-14 days after hatching. 2 broods per year, or 3 in south.
We should have realized last week when the birds were not squawking or moving and what I think was a grown bird in the nest that something was not right.
When Bob went to water the fuchsia, no bird flew out of the nest and we heard no chirps from baby birds demanding to be fed. By now we should have seen baby bird exercising their wings, in preparation of fledging.
When Bob took the plant down, the nest was empty.
I really hope that we were not part of the problem. The plant is thriving. Maybe the Carolina Wrens will try a second clutch in that same plant.