A survey where observers are each given a randomly selected 1km square and record all species and numbers of each for a minimum period of 2 hours between 9am and noon.

Aims:

  • to gather detailed information on all winter species so that, over time, we have a measure of birds across the whole area of the BOS;
  • to provide data used to identify trends in both abundance and distribution of winter species.

The results of this survey are combined with those of the previous November WRSS to obtain a winter total. This survey began in 1975 and is one of the longest running in the country.

To participate in the survey, please contact the BOS Bird Recorder: Contacts

For further details see Winter Random Square Survey

The BOS conducted a survey of Yellowhammers in the first 2 weeks of July 2018 to determine their population abundance, distribution and breeding status. All members and the general public were invited to participate. Read more ...

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One of our rarest and most charismatic breeding birds, the Curlew is the "poster-bird" of hay meadows and pastures in Oxfordshire and is now officially the UK's highest priority bird for conservation action. Read more ...

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