Back in Mallard mud.....
7 & 8th August 2010, we controlled 4 BTO ringed Sedge Warbler & 1 French ringed Reed Warbler.
2011, 7 & 8th August.. we have controlled just 1, the Sedge -- Y141566, a juvenile bird.
Likely the weather paid it's part, with a much smaller catch, and likely a slower/different passage?
We are beginning to recapture birds as adults that we ringed last August as juveniles- never seen in the breeding season.
Time will tell as we study our breeding population, but nice to think that these are returning faithful passage birds.....
....our studies go on when the weather allows !!.