Wetland Bird Survey Annual Report
Waterbirds in the UK
The Wetland Bird Survey (WeBS) is the principal scheme for monitoring the UK’s wintering waterbird populations, providing an important indicator of their status and the health of wetlands.
Survey results are reported in the annual publication Waterbirds in the UK, which comprises a summary report and updated species and sites numbers and trends and Low Tide maps via the WeBS Report Online interface. The report is published in the spring following the end of each WeBS year (which runs from July to June).
All WeBS annual summary reports are available for download. The current format, of dual publication of a summary report together with sites and species data online, began with Waterbirds in the UK 2011/12.
WeBS Report Online
Maximum counts for all sites, species indices and trends by country, low tide distribution maps, site totals for principal sites and minor sites and more are available on the WeBS Report Online interface.
For more detail on how the information is presented in the online report and important interpretation notes, please see the brief guide to WeBS Report Online and the comprehensive document
Indices and Trends Download
All indices and trends plotted in the species pages on the WeBS Report Online are also available as a spreadsheet download under an Open Government licence:
The spreadsheet contains one sheet per species (named with their two-letter codes - the top sheet gives the species name for each species code). For each species, the latest index and associated trend values are shown for UK and consituent countries. Note that not all index values start at the same year, for reasons of data availability. Please read the important methods and interpretation notes linked to above before using this dataset.
The latest WeBS data/annual report should be cited as:
Frost, T.M., Austin, G.E., Calbrade, N.A., Mellan, H.J., Hearn, R.D., Robinson, A.E., Stroud, D.A., Wotton, S.R. and Balmer, D.E. 2019.Waterbirds in the UK 2017/18: The Wetland Bird Survey. BTO, RSPB and JNCC, in association with WWT. British Trust for Ornithology, Thetford.
Datasets on the WeBS Report Online and the Indices and Trends spreadsheet are released under the Open Government Licence v3.0. To reuse, please include the following attribution statement:
“Contains Wetland Bird Survey (WeBS) data from Waterbirds in the UK 2017/18 © copyright and database right 2019. WeBS is a partnership jointly funded by the BTO, RSPB and JNCC, in association with WWT, with fieldwork conducted by volunteers."
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