Kalmar "Junco hyemalis" tana nufin wani nau'in ƙananan tsuntsaye masu ƙaura, waɗanda aka fi sani da "juncos masu duhu." Ana samun su a Arewacin Amurka, kuma suna girma a cikin gandun daji na Kanada, Alaska, da yammacin Amurka. A lokacin hunturu, suna ƙaura zuwa kudu zuwa ƙananan jihohi 48 da Mexico. Sunan "hyemalis" yana nufin "na ko kuma ya shafi hunturu," yana nuna yanayin ƙaura na yanayi.