BTO Data and Information

Information published on our website:

Facts and Figures on British birds

Trends in numbers and breeding performance over 50 years

Which birds can be found near you

BTO survey information:

Detailed Information on BTO Surveys

What you can do:

Find out what Survey Data are available

Search for BTO survey information on a SPECIES

Search for BTO survey information about an AREA 

Request data from the BTO

The BTO's Data Policy                                                       The BTO statement on Data Quality

Data on Sensitive Species -- BTO statement

The BTO has a comprehensive library in Thetford containing many books, journals, local bird reports, ringing reports and grey literature; as well as archives from its surveys and from some individuals associated with the Trust. 

See the BTO library catalogue of material.