Population trend graphs
Graphs are available for the UK, individual countries and English regions.
It is possible to calculate trends for English regions due to the high level of coverage and therefore, larger sample size for many species. Unfortunately, this is not possible for Scotland, Wales or Northern Ireland at present. The counties contributing to each region are displayed in the table below.
On each graph, the dark green line is the smoothed trend, the blue dots are the unsmoothed trend, and the pale green line is the upper and lower 95% confidence limits of the smoothed trend.
Click any graph to enlarge it.
Click 'view & save image' to open the large graph in a separate window; right-click and choose 'save image as' to download image.
These graphs may be reproduced, subject to the appropriate acknowledgement of the BTO/JNCC/RSPB Breeding Bird Survey. Spreadsheets containing the data points for each graph may be obtained by submitting a Data Request Form.
Graph not calculated for this species in this region at present.
Key for English regions
|North West England||Cheshire, Cumbria, Lancashire, Greater Manchester, Merseyside|
|North East England||Cleveland, County Durham, Northumberland|
|Yorkshire and Humber||East Yorkshire, North Lincolnshire, North Yorkshire, South Yorkshire, West Yorkshire|
|East Midlands||Derbyshire, Northamptonshire, Leicestershire & Rutland, Lincolnshire, Nottinghamshire|
|East England||Bedfordshire, Cambridgeshire, Essex, Hertfordshire, Norfolk, Suffolk|
|West Midlands||Birmingham, Herefordshire, Shropshire, Staffordshire, Warwickshire, Worcestershire|
|South East England||Berkshire, Buckinghamshire, Hampshire, Isle of Wight, Kent, Oxfordshire, Surrey, Sussex|
|South West England||Avon, Cornwall, Devon, Dorset, Gloucestershire, Somerset, Wiltshire|
Visit the Population trend tables page to view the latest BBS trends for the UK as a whole, England, Scotland, Wales, Northern Ireland and region-specific graphs, produced for nine English Government Office Regions.