A cookie is a very small text file placed on your computer's hard disk (by a website server) when you visit certain web pages. It is associated with the computer you use, not you personally, and it cannot deliver viruses.
The RSPB website uses some cookies. For example, cookies are used to save you time filling in certain forms, by automatically entering some details for you (if you want to change any details which are automatically inserted, you can simply type over any text).
If you disable the use of cookies in your browser, we cannot guarantee that all parts of the site will work.