Thanks to the bird group for providing the extra nestboxes for Jumble Hole, targeting pied flycatchers and redstart. All these 9 have gone further up the valley this time, well off the beaten track. I have tried some variety, as it's all something of a test and learn strategy. I have varied tree species, height, distance from the valley bottom, grouping in 2's and 3's, etc. Time will tell. Roll on May! I can't wait to see if any get used by target birds.