CCA scaling ordination bi-plot.

<p>Displayed are weighted correlations between <i>Plasmodium</i>/<i>Haemoproteus</i> clades (indicated by clade letters in front of divergent arrows) and avian family groups. Eigenvalues on axes and arrow lengths act as an approximate guideline to the strength of correlations and highlights the infection trends between parasitic clades and heavily infected family groups (circled).