Sprachenzählung; Demography (linguistics) ; Language census ; Dual language acquisition; Bimodal language acquisition; Spracherwerb (biling.) ; Language acquisition (biling.) ; Bilingual language acquisition ; Sprachwandel (synt.) ; Syntactic change ; Sprachbewahrung; Ethnolinguistic vitality; Vitality, ethnolinguistic; Sprachwechsel; Language shift; Heritage language; Language maintenance ; Interference (synt.) ; Canada (English language in) ; Kanada (engl. Sprache in) ; English in Canada ; Eskimo-Aleut languages