Previously the Canary Island Chiffchaff was considered as a subspecies of the Common Chiffchaff . Now it is recognised as a separate species under the name Phylloscopus canariensis for the following reasons :
The Phylloscopus canariensis is classified as Least Concern. Does not qualify for a more at risk category. Widespread and abundant taxa are included in this category.
Nothing known about the Phylloscopus canariensis