Fig. 2From: Genomic insights into natural selection in the common loon (Gavia immer): evidence for aquatic adaptationCladogram representation of common loon (Gavia immer), red-throated-loon (Gavia stellata), northern fulmar (Fulmarus glacialis), Adelie penguin (Pygoscelis adelie), rock pigeon, (Columba livia), and chicken (Gallus gallus). The aquatic diving lineages are highlighted in blueBack to article page