The Eastern Olivaceous Warbler Iduna pallida by Radovan Václav

Trends of common birds in Europe, 2017 update

This report presents an updated population trends and indices of 170 common European bird species for the time period 1980-2015 that have been produced by the Pan-European Common Bird Monitoring Scheme (PECBMS) in 2017. The species trends presented are for long time period (from 1980 onwards until 2015) and for last ten years (2006-2015).

The Eastern Olivaceous Warbler Iduna pallida by Radovan Václav

Acknowledgements

Data

In 2017, reliable European index was produced on 170 species. This year, we added a new species, The eastern olivaceous warbler Iduna pallida, on the list of common birds for the first time.

Altogether 28 countries provided their data for this update: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Luxembourg, Netherlands, Norway, Poland, Portugal, Republic of Ireland, Romania, Slovenia, Slovakia, Spain, Sweden, Switzerland, United Kingdom.

The countries provided the data for different time periods, see Methods, chapter 2. Supranational species indices and trends or check the ´List of countries´ at the individual species graphs.

New development and improvement in computation techniques allowed us to use data from multiple schemes within one country which is the case for data from Belgium, Cyprus, France, Germany, Latvia, Netherlands, Norway, Spain, Sweden. In addition, data from several special monitoring schemes are included as well: Wetland Species Monitoring in Poland (covers period 2007-2015), Rare Breeding Bird Survey in Germany (covers various periods from 1980), or Waterways Bird Survey (1974-2007) and Waterways Breeding Bird Survey (1998-2015) in United Kingdom.

Methods

Detailed description of computation steps and methods is available in special section Methods, in chapter 1. National species indices and trends and chapter 2. Supranational species indices and trends.

Species habitat classification for main habitat types (farmland, forest and other) is described in Methods, chapter 3, Box Species selection and classification.

Results

We present long-term and ten-year trends and slopes in the table. The Long-term Slope is calculated over the period 1980-2015 but starting years of this long time period vary from 1980 to 1998 (as specified in the Species notes below the table of trends). In parallel, the Long-term Trend represents a change (in %) in an index value between the first and the last year of this long time period. The Ten-year Slope is calculated over the period of last ten years, i.e. 2006-2015. Similarly, Ten-year Trend represents a change (in %) in an index value between the first and the last year of the period of last ten years.

Updated European species indices, long-term and ten-year trends and slopes, and species habitat classification are summarized in the table. For explanations to the table see also the pop-up windows which appear after clicking on the notes shown in selected species names as upper index.

To generate graph for the selected species, tick the check box at left side of species name and click Show button above the table to confirm and proceed your selection. You can draw graphs for several selected species in separate graphs or at once in one graph – select the option in All data in one graph above the table. You can also quickly deselect your choice (Reset). The list of countries and time periods for which the countries provided the data can be found at individual species graphs (Countries). You can choose to order species trends by alphabet or by taxonomic classification, see Order button in the head of the table and select  alphabet or taxonomy.

Indices and trends for 170 European bird species are now freely available for download in Excel sheets (Data Provision and Co-Authorship Policies applies).When using the data we would be grateful if you could please acknowledge the data source as: ‚EBCC/BirdLife/RSPB/CSO‘.

We appreciate you help us to keep evidence of usage of our results. For this purpose, please fill in the simple registration form after you download the data files.

Download European species indices and trends till 2015

Please, note that the data is licensed under a Creative Commons license CC BY-NC 4.0 and is governed by applicable copyright law (Creative Commons Legal Code). Creative Commons. January 9, 2008. Retrieved February 22, 2010.

Species scientific and common names as well as species taxonomic order follow the HBW and BirdLife Taxonomic Checklist.

Note: We recommend cautious interpretation of year by year changes in the index values and readers should also pay attention to species legend. For any use of the results presented in this report, we strongly recommend to consult PECBMS coordination unit (EuroMonitoring@birdlife.cz).