With our some of our first two visits to our nest box schemes in woodlands by the tributaries of the Lune now completed it is turning out to be an amazing year for Pied Flycatchers. We run an RAS scheme spread over 11 woods, last year we recorded 86 pairs. First returns suggest that we could well exceed a hundred pairs this year. Typical of this year are the following numbers of occupied boxes in a surveyed woodland.
7 pairs 2014 - 14 so far this year
3 " " 8 " "
2 " " 5 " "
2 " " 6 " "
We still need the details from some of the larger woods but first reports suggest a similar increase. When we start to catch the adults it will be interesting to see if the increase is due to good survival of adults or of good numbers of last years young returning or of course a combination of both.
Over the years the Group has ringed 9085 Pied Flys. Birds ringed as breeding adults manly return to the same wood but 15% moved within the Lune Valley and a very few move further afield. Only 3.9% of birds ringed as nestlings are traced again. Of the returning birds 34% breed in their natal wood, 50% moved elsewhere in the Lune Valley and 16% move further afield to northern England south west Scotland and Wales . One though was found nesting in western Germany and another caught on spring passage in Holland on May 4th and then found 33 days later in a nest box in Denmark.