Is it unique to this corner of the Yorkshire Dales or are other areas seeing a marked increase in the number of swift nest sites - both traditional eaves cavities and external boxes - being taken over by starlings?
We have already rescued a grounded swift that returned from Africa only to find its cavity occupied by starlings, who not won the battle over possession.
Walking around the town, we can hear and see starlings in swift boxes. It seems that the starling population has significantly increased, and that they have learnt how to squeeze through openings that were previously thought small enough to exclude them.
Interesting to know if this is a widespread problem.
John Darby
Mashamshire Swift Conservation Community Project