Previously the Canary Island Chiffchaff was considered as a subspecies of the Common Chiffchaff (Phylloscopus collybita).
These birds were formerly considered subspecies of the Common Chiffchaff but separated (Clement & Helbig, 1998; Sangster et al., 2001) due to their morphological, bioacoustical, and mtDNA sequence differences (Helbig et al., 1996).
Both the western and the now extinct eastern (Phylloscopus canariensis exsul) subspecies of the Canary Islands Chiffchaff were formerly considered subspecies of the Common Chiffchaff but were separated (Clement & Helbig, 1998; Sangster et al., 2001) due to their morphological, bioacoustical, and mtDNA sequence differences (Helbig et al., 1996).
Common Era | Book of Common Prayer | Common | Court of Common Pleas | Common (rapper) | Boston Common | Common Moorhen | Chief Justice of the Common Pleas | Ohio Courts of Common Pleas | Common Sense Media | Common Lisp | Common fig | Fanfare for the Common Man | Common land | Common Chaffinch | Common Cause | Common Quail | Common European Framework of Reference for Languages | Common Emerald | Common Blackbird | Common Admission Test | RAF Greenham Common | Common Kingfisher | Common Eider | Clapham Common | Posse comitatus (common law) | Common Waxbill | Common Threads: Stories from the Quilt | Common Swift | Common Kestrel |