HOT OFF THE PRESS!
The results of our 2012 geolocator deployments are just published in the Journal of Avian Biology! The early view of this paper can be viewed here: http://onlinelibrary.wiley.com/doi/10.1111/jav.00721/pdf
In this paper our data has been analysed along with similar data from Pied flycatchers fitted with geolocators in the Netherlands, Finland and Norway. This shows some interesting and unexpected patterns of migratory connectivity between breeding sites and wintering locations.
This spring we deployed another 20 geolocators to adult Pied flycatchers at East Dartmoor NNR. These geolocators are smaller and lighter than the ones we used in 2012, weighing only 0.36 grams including the harness.