The Wetland Bird Survey (WeBS)

Welcome to the WeBS homepage. The Wetland Bird Survey (WeBS) monitors non-breeding waterbirds in the UK. The principal aims of WeBS are to identify population sizes, determine trends in numbers and distribution, and identify important sites for waterbirds. These pages contain information on how to get involved in the survey, the methodology, and how to access data and publications and results. If you have any problems, please contact us.

Online surveys - planned maintenance Tuesday 25 September

From 0900 to 1700 on Tuesday 25 September BTO Survey applications may be unavailable due to scheduled maintenance. You may be able to register for surveys during this period, but not access them. We apologise for any inconvenience.
Pink-footed Geese - image by Chris Knights

Next WeBS Core Count date: 14 October 2018

The first build-up of wildfowl numbers begins this month as more birds arrive from their breeding grounds, some remaining in the UK all winter, while others may just stop to refuel before heading to southern Europe or North Africa to spend the winter.  Large numbers of Pink-footed Geese will gather at traditional areas in Scotland and northwest England before some carry on down to East Anglia.  As with rare passerines where October is traditionally the peak month, it is also a key time for rare waterbirds, especially waders to turn up with American vagrants such as Pectoral, White-rumped and Baird's Sandpipers all annual visitors or maybe an even rarer visitor such as a Western or Stilt S

Cover of WeBS report

Waterbirds in the UK 2016/17

The latest WeBS report, Waterbirds in the UK 2016/17 has been published. Read the report at and explore all the data and trends - including brand new facilities to explore waterbird totals for all WeBS sites and display up to four low tide maps at once - at

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