The SECOS Garden Bird Survey is open to SECOS members and non-members. The survey period covers the 38 years from the 1985-86 season to the 2023-24 season. Each season covers 26 weeks from October to March.
The results for the 22 most seen species are shown in the charts below.
Each chart contains three graphs:
- The blue bar graph shows the mean maximum number of birds seen by observers during each season. The values are shown above the bars.
- The red 'linear trendline' is a best-fit straight line through the data. It shows the overall trend through the survey period.
- The green '5-season moving average' line shows short-term changes in the data that are masked by the 'linear trendline'.
More information is available in our Winter Garden Bird Survey Notes
