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. 2008 Aug 12;4(6):685–688. doi: 10.1098/rsbl.2008.0290

Figure 1.

Figure 1

Schematic of changes in the timing of migration for five long-distance migratory birds during the period 1984–2004 (red boxes) and changes in environmental conditions (NDVI) for the period 1984–2000 (green boxes) in the wintering areas and en route for the two major flyways (blue arrows) between Africa and Europe. Green areas were analysed for environmental conditions (NDVI) and the three ringing stations are indicated (Fi, Finland; It, Italy; Is, Israel). Phenological data on the western flyway are from Jonzén et al. (2006).