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The russet sparrow (Passer cinnamomeus), also called the cinnamon or cinnamon tree sparrow, is a passerine bird of the sparrow family Passeridae. A chunky little seed-eating bird with a thick bill, it has a body length of 14 to 15 cm (5.5–5.9 in). Its plumage is mainly warm rufous above and grey below.
The rufous-crowned sparrow is a non-migratory species, though the mountain subspecies are known to descend to lower elevations during severe winters. [11] Male sparrows maintain and defend their territories throughout the year. [11] This sparrow is found in open oak woodlands and dry uplands with grassy vegetation and bushes.
The yellow-browed sparrow is a small American sparrow, measuring 13 cm (5 in) in length, [9] with a mass between 14.5 and 19 g (0.5 and 0.7 oz). [10] Sexes are similarly plumaged, though males average very slightly larger than females. [2] The adult is brownish gray on the upperparts, with dusky streaks on the back. [9]
The stripe-headed sparrow is a large, long-tailed species, 15.5 to 18 cm (6.1–7.1 in) long and weighing up to 35 g (1.2 oz). The adult has a black head with broad white stripes on the crown and above each eye.
The rufous-collared sparrow is 13.5–15 cm (5 + 1 ⁄ 4 –6 in) long and weighs 20–25 g (0.71–0.88 oz). The adult has a stubby grey bill, and a grey head with broad black stripes on the crown sides, and thinner stripes through the eye and below the cheeks. The nape and breast sides are rufous, and the upperparts are black-streaked buff ...
The chipping sparrow lays a clutch of two to seven pale blue to white eggs with black, brown, or purple markings. They are about 17 by 12 millimetres (0.67 by 0.47 in), and incubated by the female for 10 to 15 days. [7] The chipping sparrow is often brood parasitized by brown-headed cowbirds, usually resulting in the nest being abandoned. [6]
The house sparrow is a compact bird with a full chest and a large, rounded head. Its bill is stout and conical with a culmen length of 1.1–1.5 cm (0.43–0.59 in), strongly built as an adaptation for eating seeds. Its tail is short, at 5.2–6.5 cm (2.0–2.6 in) long.
Despite their name, not all of the New World sparrows resemble the typical image of a sparrow. Species in the neotropics tend to be much larger with bold patterns of greens, reds, yellows, and grays. Those in the Nearctic realm are smaller, with brown bodies streaked and with some head patterns. [8]