London: Christopher Helm/A & C Black, 2005. CD-ROM, colour photographs, maps.

The RSPB Birds of Britain and Ireland is the most advanced multimedia reference tool available to UK birders. The program contains comprehensive illustrations and photographs of all the species of Britain and Ireland including all major plumage variations, while identification text describes age, sex and geographic variations as well as voice, status and habitats. Detailed colour-coded maps and audio recordings of typical sounds are included for each species.