If you have trouble distinguishing sparrow species, take heart: you're not the only one. With practice you'll get better. Click on a photo or link to taken to separate pages with additional photos and information. Those additional pages may be bandwidth-intensive and are best visited using a high-speed connection.
Passeriformes, Passerellidae: Rufous-Crowned Sparrow, Aimophila ruficeps
Passeriformes, Passerellidae: Black-Throated Sparrow, Amphispiza bilineata
Passeriformes, Passerellidae: Lark Sparrow, Chondestes grammacus
Passeriformes, Passerellidae: Swamp Sparrow, Melospiza georgiana
Passeriformes, Passerellidae: Lincoln's Sparrow, Melospiza lincolnii
Passeriformes, Passerellidae: Song Sparrow, Melospiza melodia
Passeriformes, Passerellidae: Savannah Sparrow, Passerculus sandwichensis
Passeriformes, Passerellidae: Vesper Sparrow (Pooecetes gramineus)
Passeriformes, Passerellidae: Brewer's Sparrow, Spizella breweri
Passeriformes, Passerellidae: Chipping Sparrow, Spizella passerina
Passeriformes, Passerellidae: White-Throated Sparrow, Zonotrichia albicollis
Passeriformes, Passerellidae: White-Crowned Sparrow, Zonotrichia leucophrys
Passeriformes, Passeridae: House Sparrow, Passer domesticus