The BOS contributed to the BTO Bird Atlas 2007-2011 via its ongoing surveys (see Fieldwork) and specific contribution by our members. Our Oxforshire data has been collated along with other regional surveys to produce the Thames and Chiltern Bird Atlas. This atlas presents Abundance and Distribution maps on a finer scale than that of the national BTO atlas.
Bird Atlas
The BOS Curlew Recovery Project
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 ...
8 December 2025 - Indoor Meeting at 7.30pm
First we will hold the Banbury Ornithological Society's Annual General Meeting, quickly followed by the Annual Quiz - a great time to put formalities aside and enjoy a fun, convivial evening.
Winter Random Square Survey: 22 or 23 November 2025
A survey where observers are each given a randomly selected 1km square and record all the species encountered and numbers of each for a minimum period of 2 hours between 9am and noon. Read more ...