Data from: Dramatic niche shifts and morphological change in two insular bird species
Data files
Feb 10, 2015 version files 101.06 MB
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Fig. S1. MB Madanga Passeriformes AllLoci 4parts.pdf
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Fig. S2. MB Madanga All Loci 7parts.pdf
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Fig. S3. MB single-locus analyses.pdf
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Fig. S4. BEAST Madanga Cytb ShortInkAspr LogNorm2,1%.pdf
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MadaCytbShort.xml
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MadangaAllLoci.nxs
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PassMadangaAllLoci.nex
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Photos AMNH.zip
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RSOS-140364 contents and captions ESMs.pdf
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Table S1 Madanga Samples.xls
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Table S2.pdf
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Table S3 PCA Madanga.pdf
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Abstract
Colonizations of islands are often associated with rapid morphological divergence. We present two previously unrecognized cases of dramatic morphological change and niche shifts in connection with colonization of tropical forest-covered islands. These evolutionary changes have concealed the fact that the passerine birds madanga, Madanga ruficollis, from Buru, Indonesia, and São Tomé shorttail, Amaurocichla bocagii, from São Tomé, Gulf of Guinea, are forest-adapted members of the family Motacillidae (pipits and wagtails). We show that Madanga has diverged mainly in plumage, which may be the result of selection for improved camouflage in its new arboreal niche, while selection pressures for other morphological changes have probably been weak owing to preadaptations for the novel niche. By contrast, we suggest that Amaurocichla's niche change has led to divergence in both structure and plumage.