The Vietnamese word for ‘sparrow’ is Chim sẻ. Unmodified, this refers to Passer montanus, which is the common local sparrow. (Apart from the sparrows, the word is also used in the names of the bush chats and some buntings andfinches). P. montanus has a number of local variant names: Chim sẻ sẻ (Central dialects), Chim se sẻ (Central and Southern dialects), Chim ri (Southern dialects), and Chim thẻ (Northern dialects).
Vietnamese has the expression Chim sẻ nhờ nương, sơn dương nhờ núi, meaning ’the sparrow has recourse to the fields, the antelope has recourse to the mountains’, an expression of emotional attachment to one’s native place.