Black-throated Sparrow
Amphispiza bilineata
The black-throated sparrow is about 12 to 14 cm (4.7 to 5.5 in) long, weighs 11 to 15 g (0.39 to 0.53 oz), and has a wingspan of about 19.5 cm (7.7 in). The sexes have the same plumage. Adults of the nominate subspecies A. b. bilineata have a black forehead, a gray crown and nape, a white supercilium and malar stripe both with thin black borders, black lores, and dark slate ear coverts. Their back and scapulars are brownish gray and their uppertail coverts mouse gray. Their tail is mostly brownish black. Voice: The black-throated sparrow's song usually has two parts, an "(1) introduction with note(s) followed by buzz and (2) repetitive section of trills (and sometimes buzzes)". One rendering is "chee-whee, whit, wher'r'r'r, cha, cha, cha, or chee cha cher'r'r'r'r chee". It apparently has few calls.
ID text from Wikipedia, CC BY-SA 4.0
Grasshopper Sparrow
Ammodramus savannarum
These small sparrows measure 10–14 cm (3.9–5.5 in) in length, span about 17.5 cm (6.9 in) across the wings and weigh from 13.8 to 28.4 g (0.49 to 1.00 oz), with an average of 17 g (0.60 oz). Adults have upper parts streaked with brown, grey, black and white; they have a light brown breast, a white belly and a short brown tail. Their face is light brown with a white eye ring and a dark brown crown with a central narrow light stripe. Adults sport bright yellow feathers at the crook of their underwing, and have a yellow-to-amber patch above their lores.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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