Swainson's Sparrow or Eurasian Tree Sparrow?

General appearance

The Eurasian tree sparrow is about the size of a House Sparrow, roughly 15 cm or 6 inches long. Its wing shape is either fingered or rounded and its tail may be notched, rounded, or square-tipped. It has a combination of colors; black, brown, gray, tan, and white. One distinctive feature is the brown crown on its head, differing from the gray crown of the House Sparrow. It also has a black ear spot on a white cheek.

Male vs female

Both male and female Eurasian tree sparrows resemble the male House Sparrow, and there is no notable sexual dimorphism between them. This means that both sexes share similar features such as a brown crown, white cheeks with black ear spot, and usually a smaller black bib. This species does not show significant changes in appearance between seasons.

Juvenile

Juvenile Eurasian tree sparrows tend to look like adults but their colors are more muted, making them less conspicuous to predators. As they mature, their colors will become more pronounced. It is noteworthy, however, that size or color variations may occur depending on their diet and habitat condition.

Primary habitat

The Eurasian tree sparrow typically occupies semi-open habitats in Europe and Asia, often found in woodland edges, towns, and farms.

Additional range

In North America, it is fairly local, preferring open country with scattered bushes and trees and is also present in suburban and city areas.

Natural diet

The Eurasian tree sparrow primarily consumes seeds and insects, forming the core of its diet. Although specific dietary details in North America are not extensively documented, it is known to eat seeds from various weeds and grasses. During the summer months, their insect consumption likely increases, as insects are abundant and provide a valuable protein source.

Bird feeders

At bird feeders, the Eurasian tree sparrow typically eats the same types of seeds that are found in its natural habitat. These include seeds from common bird feed mixes such as millet, sunflower seeds, and cracked corn. Their adaptability in seed choice makes them common visitors to bird feeders that offer diverse seed options.