Proceedings of an International Symposium of the Wetlands International Woodcock and Snipe Specialist Group Survival rates of Russian Woodcocks Isabelle Bauthian, Museum national d’histoire naturelle, Centre de recherches sur la biologie des populations d’oiseaux, 55 rue Buffon, 75005 Paris, France. E-mail:
[email protected] Ivan Iljinsky, State University of St Petersburg, Russia. E-mail:
[email protected] Sergei Fokin, State Informational-Analytical Center of Game Animals and Environment Group. Woodcock, Teterinsky Lane, 18, build. 8, 109004 Moscow, Russia. E-mail:
[email protected] Romain Julliard, Museum national d’histoire naturelle, Centre de recherches sur la biologie des populations d’oiseaux, 55 rue Buffon, 75005 Paris, France. E-mail:
[email protected] François Gossmann, Office national de la chasse et de la faune sauvage, 53 rue Russeil, 44 000 Nantes, France. E-mail:
[email protected] Yves Ferrand, Office national de la chasse et de la faune sauvage, BP 20 - 78612 Le-Perray-en-Yvelines Cedex, France. E-mail:
[email protected] We analysed 324 recoveries from 2,817 Russian Woodcocks ringed as adult or yearling in two areas in Russia (Moscow and St Petersburg). We suspected that birds belonging to these two areas may experience different hunting pressure or climatic conditions, and thus exhibit different demographic parameters. To test this hypothesis, we analysed spatial and temporal distribution of recoveries, and performed a ringing-recovery analysis to estimate possible survival differences between these two areas. We used methods developed by Brownie et al. in 1985. We found differences in temporal variations of the age ratio between the two ringing areas.