Golden-crowned Sparrow
Zonotrichia atricapilla
Measuring 15–18 cm (6–7 in) in length with a wingspan of 24.75 cm (9.74 in) and ranging from 19.0 to 35.4 g (0.67 to 1.25 oz) in mass, the adult golden-crowned sparrow is fairly large for an American sparrow. Like all Zonotrichia sparrows, it has a relatively long, square-tipped tail and a slightly peaked crown. Males and females are similarly plumaged, though males average slightly larger than females. Other than a plain gray nape, the adult's upperparts are grayish-brown, with broad brownish-black streaks on the back and scapulars, and an unstreaked rump. Voice: The song is a three-note whistle, descending in pitch. It is very distinctive, and often described as oh-dear-me. The call also sounds like the words I'm so weary, so Alaskan gold miners along the trails called this bird "Weary Willie". However, birds in the mountains of British Columbia have been reported to have a trill on the third note, rather than a clear whistle as in other populations.
ID text from Wikipedia, CC BY-SA 4.0
Rufous-collared Sparrow
Zonotrichia capensis
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-brown. There are two white wing bars. The throat is white, and the underparts are off-white, becoming brown on the flanks and with a black breast patch. Young birds have a duller, indistinct head pattern, with brown stripes and a buff ground colour. Voice: The rufous-collared sparrow has extensive geographical variation in its vocalisations, but calls include a sharp tsip. The male's song, given from a low perch, typically includes slurred whistles with or without a final trill, tee-teeooo, e'e'e'e'e, or teeooo, teeeee.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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