Grassland Sparrow
Ammodramus humeralis
The grassland sparrow is a robust species with a large head and a short tail, with a total length of about 13 cm (5 in). The wings are short and the legs fairly long. The upper parts are brownish-grey streaked with black. The breast and flanks are greyish-buff or pinkish-buff and the underparts are dull white. There is a narrow white eye-ring, and a spot of yellow on the lores and another on the bend of the wing. The song is a high-pitched but thin series of plaintive phrases, "eee, telee, teeeee".
ID text from Wikipedia, CC BY-SA 4.0
Yellow-browed Sparrow
Ammodramus aurifrons
The yellow-browed sparrow is a small American sparrow, measuring 13 cm (5 in) in length, with a mass between 14.5 and 19 g (0.5 and 0.7 oz). Sexes are similarly plumaged, though males average very slightly larger than females. The adult is brownish gray on the upperparts, with dusky streaks on the back. Its underparts are whitish, shading to grayish on the chest and buff on the flanks. Its legs are pinkish-brown, while the beak is horn-colored, with a darker culmen. Its iris is reddish brown. Voice: The yellow-browed sparrow's high-pitched song is described as "insect-like". Monotonous and buzzy, it is transcribed as tic, tzzz-tzzzzz, with the first note weak and short. The male sings throughout the day from a low, exposed perch.
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: Grassland Sparrow and Yellow-browed Sparrow.