In addition to the monthly meetings, members receive a newsletter each month, a copy of the Annual Report, have access to the BOS reserves and can participate in the various surveys undertaken by the Society.

You can join at any time of year. The fees listed below are the full annual rate. If you join part way through the year then a pro-rata fee will apply.

Adult £25.00
Joint £36.00
Junior (under 18) FREE 
Senior Citizen £18.00
Joint Senior Citizen £27.00
Corporate £40.00

 

To join, please contact the New Members Officer, Gary Waite (please see link on the Contact us page) or come along to one of our monthly meetings and speak to one of the committee members.

Bearded Tit at Bicester Wetland © Derek Hales Tree Sparrow at Balscote © Richard Dunn Song Thrush © Nick Truby Teal © Trevor Easterbrook

UK currently holds approximately a quarter of the global Curlew population, with estimates for England of about 30,000 pairs. National monitoring data show that this population has been in long-term decline since the 1970s and has almost halved in the UK over the last 20 years. In lowland southern England, the population has declined to about 500 pairs, with many colonies on the verge of local extinction. Read more ...

Great Black-backed Gulls: from populations to individuals  -  Sam Langlois from BTO Scotland

The Great Black-backed Gull is one of the North Atlantic’s most conspicuous and largest seabirds — yet much of its ecology remains poorly understood. This talk will present new insights into global population trends and foraging ecology, focusing on diet and GPS tracking studies undertaken on the Isle of May, Scotland.  Read more ...

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. Read more ...

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