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Figure 1 | BMC Evolutionary Biology

Figure 1

From: The evolution of contact calls in isolated and overlapping populations of two white-eye congeners in East Africa (Aves, Zosterops)

Figure 1

Average positions (error bars denote two standard errors) of Z. abyssinicus (parapatric and allopatric - open circles, sympatric - open square) and Z. poliogaster populations (parapatric and allopatric - black circles, sympatric - black square) within two dimensional acoustic PCA space (strongly driven by a variation of starting and lowest frequencies and of frequency range in the highland species Z. poliogaster , for summary of loadings see TableĀ  1 ), convex hulls for both species exclude the respective sympatric populations.

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