Additional file 1.

Birds with both mitochondrial and nuclear intron sequence data. The 35 birds common (or phylogenetically equivalent) to both mitochondrial (this paper) and the seventh intron of the β-fibrinogen datasets (Fain and Houde 2004), used to explore the phylogenetic signal within the seventh intron of the β-fibrinogen sequence.

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Morgan-Richards et al. BMC Evolutionary Biology 2008 8:20   doi:10.1186/1471-2148-8-20