MCC phylogeny of 782 species of the Corvides

This phylogeny was largely based on that from the study Jønsson et al. (2016), which generated a time-calibrated tree using sequence data from 665 species of the Corvides. The remaining 124 species (as recognized by the IOC 2.7) which had no sequence data available at the time of the tree generation were added as polytomies to the maximum clade credibility (MCC) tree of Jønsson et al. (2016) using current taxonomic information. The branch lengths subtending these species were inferred using the polytomy resolution method. Subsequently, we pruned out 7 species for which wing measurements were unavailable.本系统发育树主要基于Jønsson等人（2016）的研究成果，该研究利用鸦支系（Corvides）665个物种的序列数据构建了时间校准树。剩余的124个物种（经国际鸟类学委员会（IOC）2.7版分类系统认可）在该树构建时暂无可用序列数据，本研究结合当前分类学信息，将其以多歧支的形式添加至Jønsson等人（2016）的最大分支可信度（MCC）树中。这些物种所在分支的分支长度通过多歧支解析方法进行推断。随后，本研究剔除了7个暂无翼部测量数据的物种。