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Fig. 4 | Avian Research

Fig. 4

From: Recent changes in breeding abundance and distribution of the Common Pochard (Aythya ferina) in its eastern range

Fig. 4

Trends in numbers of the Common Pochard in 14 administrative regions of European Russia. Numbers refer to administrative regions identified as follows: 1—Leningrad; 2—Vologda; 3—Kaliningrad; 4—Moscow; 5—Ivanovo; 6—Smolensk; 7—Chuvashia Republic; 8—Kirov; 9—Lipetsk; 10—Penza; 11—Saratov; 12—Volgograd; 13—Krasnodar Territory; 14—Dagestan Republic

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Avian Research

ISSN: 2053-7166