Editing Brewer's sparrow (section)

==Description and systematics==
Adults have grey-brown backs and speckled brown crowns, both with dark streaks, and a pale eye-ring. Their wings are brown with light wing bars and the underparts are pale grey. Their bill is pale with a dark tip and they have a long notched tail. They are similar in appearance to the [[clay-colored sparrow]] (''S. pallida'') but do not have a pale stripe on the crown or grey neck patch.

'''Measurements''':<ref>{{Cite web|title=Brewer's Sparrow Identification, All About Birds, Cornell Lab of Ornithology|url=https://www.allaboutbirds.org/guide/Brewers_Sparrow/id|access-date=2020-09-29|website=www.allaboutbirds.org|language=en}}</ref>

* '''Length''': 5.1–5.9 in (13–15&nbsp;cm)
* '''Weight''': 0.4–0.5 oz (11–14 g)
* '''Wingspan''': 7.1–7.9 in (18–20&nbsp;cm)

The male sings to defend a nesting territory. The song is a long varied mix of notes and trills. Males have two distinct types of songs – classified as short and long songs.

There are two distinct [[subspecies]]:
* '''Brewer's sparrow''' proper, '''''Spizella breweri breweri'''''
:Found in brushy areas, especially with [[sagebrush]], in southern parts of western [[Canada]] and in the western United States.
* [[Timberline sparrow]], '''''Spizella breweri taverneri'''''
:Found in thicketed areas around the [[tree line]] in the [[Rocky Mountains|Rockies]] of [[British Columbia]], [[Alberta]], and northern [[Montana]], the southern [[Yukon]], and southeastern [[Alaska]]. These birds are somewhat darker and larger than the southern subspecies; some consider this to be a separate species.