Biology — Phylogeny: warblers
Old World leaf and scrub warblers.
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((Willow_warbler:6,Chiffchaff:6):3,(Blackcap:8,Whitethroat:8):1);
Old World leaf and scrub warblers.
((Willow_warbler:6,Chiffchaff:6):3,(Blackcap:8,Whitethroat:8):1);