I continued cleaning out nest boxes today. Two of the nest boxes around the old field were used by house wrens, the first time this species has nested at the garden, at least as far as we know. And I suspect we would have known, because they certainly let you know when they are present. The first brood hatched and fledged quite quickly, and not long after the young were flying on their own, a second nest was made in another nest box. This nest, pictured in the photo, was much better constructed than the first one, with a deep cosy area thickly lined with feathers. There was one unhatched egg in there. The other nest was built on top of a mouse nest which was built on top of a squirrel nest! That one had several red cardinal feathers lining the nest.