Figure 1.

Localities. Map of localities where males of the Thrush Nightingale (Luscinia luscinia) and the Common Nightingale (Luscinia megarhynchos) were sampled. White - allopatric range of L. megarhynchos, dark grey - allopatric range of L. luscinia, light grey - range overlap of both species (i.e., sympatry). Species' ranges are redrawn with modifications from Sorjonen [43], Cramp [46] and Hagemeijer and Blair [54].

Reifová et al. BMC Evolutionary Biology 2011 11:138   doi:10.1186/1471-2148-11-138
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