Editing Northern flying squirrel (section)

{{Short description|Species of rodent}}
{{speciesbox
| image = Northern Flying Squirrel, D'Alembert, 6400 Route d'Aiguebelle, Rouyn-Noranda, QC, Canada imported from iNaturalist photo 41110662.jpg
| status = LC
| status_system = IUCN3.1
| status_ref = <ref name="iucn">{{cite iucn |author=Cassola, F. |date=2016 |title=''Glaucomys sabrinus'' |volume=2016 |page=e.T39553A22256914 |doi=10.2305/IUCN.UK.2016-3.RLTS.T39553A22256914.en |access-date=11 November 2021}}</ref>
| genus = Glaucomys
| species = sabrinus
| authority = ([[George Shaw (biologist)|Shaw]], 1801)
| subdivision_ranks = Subspecies
| subdivision = see text
| range_map = Glaucomys sabrinus map.svg
| range_map_caption = Northern flying squirrel<br />range<ref name="iucn"/><sup>(excludes ''[[Glaucomys oregonensis]]'')</sup>
}}

The '''northern flying squirrel''' ('''''Glaucomys sabrinus''''') is one of three species of the genus ''[[New World flying squirrel|Glaucomys]]'', the only [[flying squirrel]]s found in [[North America]].<ref name = "Walker and Paradiso 1975">Walker EP, Paradiso JL. 1975. ''Mammals of the World''. Baltimore: Johns Hopkins University Press.</ref><ref name = "Forsyth 1999">Forsyth A. 1999. ''Mammals of North America: Temperate and Arctic Regions''. Willowdale: Firefly Books.</ref>  They are found in coniferous and mixed coniferous forests across much of Canada, from Alaska to Nova Scotia, and south to the mountains of North Carolina and west to [[Utah]] in the United States. They are light brown with pale underparts and grow to a length of {{convert|25|to|37|cm|in|0|abbr=on}}. They are proficient gliders but uncoordinated walkers on the ground. They feed on a variety of plant material as well as tree sap, fungi, insects, carrion, bird eggs and nestlings. They mostly breed once a year in a cavity lined with lichen or other soft material. Except when they have young, they change nests frequently, and in winter a number of individuals may huddle together in a shared nest. Unlike most members of their family, flying squirrels are strictly nocturnal.