Digital Nature is delighted to share that the Irish Wetland Bird Survey: I-WeBS National and Site Trends Report 1994/95 – 2019/20 has just been published by BirdWatch Ireland.
This report details how 36 species of wetland bird are faring in Ireland based on the data gathered by more than 1,100 surveyors that have contributed details of more than 81,000 site visits since the I-WeBS survey started in 1994. National Trends are provided as well as Site-Specific Trends for 97 sites.
Details of the analysis are described in the I-WeBS Trends Report Methodology document. The Underhill technique was used to impute missing counts where appropriate, seasonal counts were indexed to focus on relative changes in abundance, and Generalised Additive Models were employed to smooth these trends. Short, Medium and Long-Term Trends have been calculated and plotted for each species.
For more information on this report see this dedicated BirdWatch Ireland article.