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Table 1 Estimated staging areas for great reed warblers caught in Zambia in 2011 and 2012

From: Seasonal rainfall at long-term migratory staging sites is associated with altered carry-over effects in a Palearctic-African migratory bird

Cluster 2011 2012 Years combined
1 3 (12 %) 2 (5 %) 5 (8 %)
2 18 (72 %) 32 (84 %) 50 (79 %)
3 4 (16 %) 4 (11 %) 8 (13 %)
4 0 (0 %) 0 (0 %) 0 (0 %)
  1. Cluster 1: Congo Basin, north Africa, and pockets of west Africa, southern Africa, and Madagascar; cluster 2: Angola, Zambia, Zimbabwe, and southern portions of the Democratic Republic of the Congo but also to extreme west Africa; cluster 3: a broad arc spanning the Atlantic coast of Senegal, south and east toward the Congo Basin, along Africa’s eastern shoreline and westward into Botswana and Namibia; cluster 4: horn of Africa and the north-eastern Sahel region; see Fig. 3 in [40] for details. Staging clusters were estimated via a triple isotope cluster analysis, using isotope values (δ 15N, δ 13C, δ 2H) from tail feathers moulted during staging. The number of birds assigned to each cluster is included along with the corresponding proportion