Canary Islands Chiffchaff was created in 1886.

Eastern Canary Islands Chiffchaff was created in 1907.

Western Canary Islands Chiffchaff was created in 1886.

It gets its name from its call "cuckoo". Other birds have been named after their calls such as "crow" and "chiffchaff" It gets its name from its call "cuckoo". Other birds have been named after their calls such as "crow" and "chiffchaff"

No, Chiffchaffs are birds, and all birds use endothermic means to keep a constant body temperature.