FIGURE 2 in On the taxonomic status of the Siberian Chiffchaff Phylloscopus [collybita] tristis (Phylloscopidae)

FIGURE 2. Distribution of the Common Chiffchaff, including P. collybita collybita, abietinus, caucasicus, menzbieri and brevirostris, with orange indicating breeding and yellow wintering ranges. Distribution of the Siberian Chiffchaff P. [c.] tristis, with purple indicating breeding and blue wintering ranges. The narrow (10km wide) contact zone between P. c. abietinus and P. [c.] tristis in the western Ural foothills is broadly located at the overlap between Common Chiffchaff and Siberian Chiffchaff distributions. The identity of populations wintering in the Middle East is unclear (Shirihai & Svensson 2018; Raković et al. 2019).