The study of our local birds is the lifeblood of the BOS and we encourage all members to participate in bird recording, whether you are a complete beginner or an experienced birder. 

The BOS maintains a list of all of the species seen within the BOS observeration area - the Systematic List. This is used to guide the records submitted for each species. 

Information on the birds within the BOS is collected by a series of surveys and ongoing observations. See the Fieldwork page for further details.

Members receive a monthly newsletter containing details on recent notable bird sightings, along with other local bird related news. Historic newsletters can be viewed here: Newsletters

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.

The BOS covers a diverse range of habitats, from low level floodlands of the river Cherwell to the heights of Edge Hill and the Cotswolds. It also spans three major river systems of England - the Thames, Severn and Great Ouse. For a map of the area, see BOS area map. Read more ...

The BOS Systematic List is a record of all the bird species that have been observed in the BOS area, currently standing at 277 species as of January 2021. The list and the status of each species up to 2012 is published in the book Birds of the Heart of England by Trevor Easterbrook. The list excludes sub-species, escapes and unverified records. The species are listed in the current BOU (IOC) order. BOS use the British vernacular species name, mostly the same as that listed by the BTO. Read more ...

In March 2020 the BTO launched their Chaffinch Appeal to raise funds to help them research why the UK population of Chaffinch is undergoing a significant decline. Read more ...

Bars and Spots - Mixed Fortunes of our Woodpeckers - Ken Smith

Ken Smith is a former research scientist with RSPB and has been studying woodpeckers for over 30 years but has always been heavily involved with local birding and recording through the Herts Bird Club, bird ringing and the BTO. Read more ...

Depending upon Covid-19 restrictions nearer the time this year's count may have to be posponed until restrictions have been lifted.  Please note further guidance will appear here and in the Newsletters nearer the time.

The Long Day Count is carried out by teams of observers in each of the twelve 10km squares recording the number of bird species seen during a maximum of 12 daylight hours on the second Sunday in May each year. Read more ...

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