Longspur is a term used to describe certain types of sparrows. There are several synonyms for this word which include: Calcarius, Lapland bunting, and snow bunting. The Calcarius is a sparrow that can be found in North America and is a member of the longspur species. The Lapland bunting is another type of longspur that is known for its small size and striking coloration. The snow bunting is also a longspur that is distinguished by its thick, white plumage. These synonyms are important for birdwatchers and nature enthusiasts as they help to identify and differentiate between different species of longspurs.