The pied wagtails that earlier this year decided to nest inside our tractor, right on top of the engine, are back with another brood. Their attempts to raise chicks earlier this year were successful despite the chicks being driven half way around the estate before we realised they were in there. After the chicks fledged we cleaned out the nest and continued using the tractor. However, over the past month we have not used the tractor and when ranger Dave checked it this morning there was a new nest, full to the brim with pied wagtail chicks just about ready to fledge. The parents obviously have very post-modern industrial taste when it comes to the decoration scheme of their nests.