BTO: Preliminary report on the 2023 breeding season

One of the more labour intensive aspects of bird ringing is the Constant Effort Site project. This requires 12 sessions to be run, approximately 10 days apart, with the same number of nets, set in the same places, for the same length of time on each occasion. The report that you can read from the link below is the preliminary result of last year’s efforts across the country:

https://www.bto.org/our-science/projects/bird-ringing-scheme/ringing-surveys/constant-effort-sites/historical-preliminary-ces-results/2023-ces-results