Common chiffchaff point, appears to be used to advertise an established territory and contact the female, rather than as a paternity guard strategy. Beyond the core territory, there is a larger feeding range which is variable in size, but typically ten or more times the area of the breeding territory. It is believed that the female has a larger feeding range than the male. After breeding has finished, this species abandons its territory, and may join small flocks including other warblers prior to migration. The male common chiffchaff returns to its breeding territory two or three weeks before the female and immediately
Eastern Canary Islands chiffchaff Eastern Canary Islands chiffchaff The eastern Canary Islands chiffchaff or Lanzarote Island chiffchaff ("Phylloscopus canariensis exsul") is an extinct subspecies of the Canary Islands chiffchaff endemic to the island of Lanzarote – and possibly also Fuerteventura – in the Canary Islands, Spain. The eastern Canary Islands chiffchaff was more chestnut-backed and shorter-winged than the western Canary Islands chiffchaff, "Phylloscopus canariensis canariensis". 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). Apparently this subspecies was already very