How to identify the Eurasian Tree Sparrow

To correctly identify the Eurasian Tree Sparrow (Passer montanus), check each of these features. Birds can be tricky: habit, habitat, and call often confirm a sighting that a single photo cannot.

Size at a glance

Length

12.5-14 cm

Wingspan

20-22 cm

Weight

19-24 g

Physical features to check

1. 1

   Plumage

   Overall feather coloration and pattern.

   Adults have a rich chestnut-brown crown and nape, a white collar extending from the nape to the sides of the neck, and a distinct black patch on the white cheek. The upperparts are streaked brown and black, while the underparts are plain greyish-white. The wings are brownish with two distinct white wing bars. The rump is greyish-brown.

2. 2

   Beak shape

   Shape and color of the bill: a key field mark.

   Conical and stout, dark grey to black, especially during breeding season.

3. 3

   Eye color

   Iris color and any distinctive eye markings.

   Dark brown.

4. 4

   Leg color

   Leg and foot color.

   Pale brown to yellowish-brown.

5. 5

   Distinguishing features

   Standout features that separate this species.

   The most distinctive features are the chestnut crown, white collar, and the prominent black ear patch on a white cheek. These marks differentiate it clearly from the House Sparrow.

6. 6

   Juvenile appearance

   How young birds differ from adults.

   Juveniles resemble adults but have duller plumage. The chestnut crown is less vibrant, the black ear patch is less defined, and the overall coloration is softer and more muted. The bill is often paler, yellowish at the base.

7. 7

   Seasonal changes

   Plumage variation between breeding and non-breeding seasons.

   No significant seasonal changes in plumage. The plumage may appear slightly fresher after the autumn molt and more worn by late spring.

8. 8

   Sexual dimorphism

   How males and females differ.

   None; males and females are virtually identical in plumage.

Key field marks

• Head Pattern. Look for the distinctive chestnut-brown crown and nape, a clear white collar, and a prominent black patch on the white cheek. This combination is unique among sparrows in its range.
• Plumage Coloration. Note the streaked brown upperparts and plain greyish-white underparts. Two clear white wing bars are also a good field mark.
• Size and Shape. It's a small, compact sparrow, slightly smaller and more slender than a House Sparrow.
• Vocalization. Listen for its characteristic sharp, metallic 'chip' call, which is distinct from the House Sparrow's more varied chirps.
• Behavior. Observe its preference for more rural or semi-open habitats compared to the House Sparrow's strong association with dense urban areas.

Explore the Eurasian Tree Sparrow