Recommended citation for the Proceedings:

Szép, T., Blair, M. and Báldi, A. (eds.) 2003. Bird Numbers 2001, Monitoring for Nature Conservation. Proceedings of the 15th
International Conference of the EBCC. - Ornis Hungarica 12-13.

Recommended citation for the articles:
R. D. Gregory, D. Noble, R. Field, J. Marchant, M. Raven, and D. W. Gibbons. 2003. Using birds as indicators of biodiversity. - Ornis Hungarica 12-13: 11-24.

ISSN 1215-1610

Published by the MME/BirdLife Hungary, Budapest