The adults were late in arriving this year and the population certainly appears to have been down on recent years. This year we caught 146 adults (88 new birds and 58 retraps from previous years). This compares to an average of 192 for the previous five years. The late arrival and an early departure may well have reduced the catch but even so the breeding population does appear to have been lower.
However the excellent late spring and summer weather appears to have been good for productivity for despite the apparent drop in the breeding population we ringed 743 young birds, well up on the 504 in the poor weather of 2012 and also up on the five year average of 598.
Departure of adults was certainly earlier than usual, many apparently leaving in late July/ early August. We only caught 15 adults in August compared to an average of 70 over the past few years. I wonder if the late spring arrival meant that very few birds attempted a second brood. Also the good productivity suggested fewer re-lays after a failed attempt.
Sedge Warblers also appear to have had excellent productivity with a catch of 326 compared with an average of 270 over the past five years.