Swainson's Sparrow or House Sparrow?
Here's how to tell the difference
Swainson's Sparrow
House Sparrow
Swainson's Sparrow
Passer swainsonii
General appearance
Swainson's sparrows possess a predominantly brownish-grey coloration with dark streaks along the back and wings. They are small, measuring around 12.7–15 cm in length and 18–24 cm in wingspan. The underparts are pale grey, with a distinguishable buff eye-ring and line behind the eye.
Male vs female
Males and females look similar in appearance with no significant variations. Both sexes have similar coloration and size. In the breeding season, however, males may exhibit a slightly brighter colour in order to attract mates, a common trait in several bird species.
Juvenile
Juvenile Swainson's sparrows display similar coloration and patterns to adults, but maybe a bit duller. Their feathers often have a more loosely textured appearance, distinguishing them from adults. As they mature, they grow into their sleeker plumage, resembling more closely the adult birds.
Size
6.1 - 6.5 in/1.0 - 1.2 oz
There's more to learn about Swainson's Sparrow
View full detailsHouse Sparrow
Passer domesticus
General appearance
House sparrows are small, stocky birds measuring about 16 cm in length. They have a short tail and a stout bill. Their plumage is predominantly brown, with black streaks on their back and wings. This common bird has a distinctive, somewhat rounded head and a smooth body shape that helps in identifying it in urban and rural areas alike.
Male vs female
Male house sparrows are more vibrant with a gray crown, a chestnut-brown nape, and white cheeks. They have a distinctive black bib on their throat, which can vary in size seasonally. In contrast, females are duller with a more uniform brown coloration, lacking the bold markings of males. Their underparts are a plain grayish-brown, and they have a more pronounced eye stripe behind the eye.
Juvenile
Juvenile house sparrows resemble females but are even paler, with grayish-brown plumage and softer streaks. They lack the developed throat patch and bright head pattern found in adults. Juveniles gradually acquire adult coloration through moulting, becoming distinguishable by their more uniform brown appearance and subtler facial markings.
Size
5.9 - 6.7 in/1.0 - 1.1 oz
There's more to learn about House Sparrow
View full detailsHow to tell the Swainson's Sparrow from the House Sparrow
Visual differences
Swainson's Sparrow and House Sparrow both measure around 6-6.5 inches in length and weigh 0.95-1.1 ounces. Swainson's Sparrow has predominantly brownish-gray plumage with dark streaks and a buff eye-ring. It lacks the distinct sexual dimorphism seen in House Sparrows, where males boast gray crowns, chestnut-brown napes, and black bibs, while females are duller with grayish-brown tones and a pronounced eye stripe. House Sparrows have a stocky build with a stout bill and smoother body, whereas Swainson's Sparrow appears slightly slimmer.
Key differences and behavior
Swainson's Sparrow and House Sparrow both thrive near human habitations, but Swainson's Sparrow is more common in Ethiopian towns, while House Sparrow is widespread in urban and rural areas globally. Swainson's Sparrow forms large flocks outside breeding, whereas House Sparrows are noted for social singing and roosting in groups. Swainson's Sparrows prefer tall grass prairies, migrating to warmer regions in winter, while House Sparrows are adaptable to various environments including urban and isolated settings. Both species consume seeds and insects but differ in nesting habits; Swainson's Sparrow prefers shrubs or low trees for complex courtship displays, while House Sparrow often nests in enclosed niches.
Still not sure? Here are more lookalikes!
Swainson's Sparrow vs Chipping Sparrow
Swainson's Sparrow vs Eurasian Tree Sparrow
House Sparrow vs Chipping Sparrow
House Sparrow vs Song Sparrow
House Sparrow vs Eurasian Tree Sparrow
House Sparrow vs American Tree Sparrow
Swainson's Sparrow vs [Select a bird]
[Select a bird]
Pick a bird to compare
House Sparrow vs [Select a bird]
[Select a bird]
Pick a bird to compare






