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
List of BTO surveys -- Continuing Surveys Completed 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
The BTO's Data Policy The BTO statement on Data Quality
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 Catalogue of material.