Iberian chiffchaff Previously the Iberian chiffchaff was considered as a subspecies of the common chiffchaff. As of 2016, it is recognised as a separate species under the name "Phylloscopus ibericus" for the following reasons (compared to the common chiffchaff): In past, erroneously listed as "Phylloscopus brehmii". Iberian chiffchaff The Iberian chiffchaff ("Phylloscopus ibericus") is a species of leaf warbler endemic to Portugal, Spain and North Africa, west of a line stretching roughly from the western Pyrenees via the mountains of central Spain to the Mediterranean. The name "chiffchaff" is onomatopoeic, referring to the repetitive "chiff-chaff" song of the common chiffchaff ("Phylloscopus collybita").
The Sibley Guide to Birds North American and one for the eastern half. The guide was favorably reviewed by "The New York Times", "The Wilson Bulletin" (now "The Wilson Journal of Ornithology"), and the journal "Western Birds". The Sibley Guide to Birds The Sibley Guide to Birds is a reference work and field guide for the birds found in the continental United States and Canada. It is written and illustrated by ornithologist David Allen Sibley. The book provides details on 810 species of birds, with information about identification, life history, vocalizations, and geographic distribution. It contains several paintings of each species, and is critically acclaimed