The project has now morphed into a study of adult survival and return-rates, following the fortunes of individual birds.
There's a 2020 project report at: http://cambridgeshirebirdringing.org/spofl-finding2/ This has a link to the 2016-2019 Geolocator project.
Lots of new stuff on adult survival; ringing; numbers; distribution; infidelity and bad behaviour.
If we find them difficult to find, how hard is it for them to find each other?
Michael Holdsworth will be continuing work on Flycatcher communities and adult survival into 2021 and we would still like all records to be sent to