Chestnut Sparrow
Passer eminibey
Like the other members of the sparrow family, the chestnut sparrow is a small, chunky songbird with a thick bill suited to its diet of seeds. At 10.5 to 11.5 cm (4.1–4.5 in) in length, it is the smallest member of the sparrow family. It weighs between 12 grams (0.42 oz) and 17 grams (0.60 oz). Wing length ranges from 6.0 to 6.5 cm (2.4–2.6 in) in males and from 5.7 to 6.0 cm (2.2–2.4 in) in females. The tail, bill, and tarsus lengths are about 4 cm (1.6 in), 1 cm (0.39 in), and 1.5 cm (0.59 in) respectively.
ID text from Wikipedia, CC BY-SA 4.0
Swainson's Sparrow
Passer swainsonii
The Swainson's sparrow reaches a body length of 16 centimetres (6.3 in). There is no conspicuous sexual dimorphism. It is often considered a race of grey-headed sparrow, but it tends to be darker, especially on the head and shoulders. There is a white bar on the shoulder, but this is not always visible. Similarly, the pale chestnut tail and rump is not always visible.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Chestnut Sparrow and Swainson's Sparrow.