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Figure 3 | BMC Evolutionary Biology

Figure 3

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

Figure 3

Comparison of acoustic space as measured by first (dominant) eigenvector A. (upper panel) and the ellipse area B. (lower panel) spanned by the first two eigenvectors of principal coordinates analysis occupied by sym-, para-, and allopatric populations of the lowland Zosterops abyssinicus (white) and the highland Z. poliogaster (black). The sympatric Nairobi populations are indicated by squares.

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