Saltmarsh sparrow 
Santa Marta Brushfinch 
Savannah sparrow 
Seaside sparrow 
Short-billed Chlorospingus 
Sierra Nevada brushfinch 
Slaty brush finch 
Song Sparrow 
Sooty-capped bush tanager 
Spotted towhee 
Stripe-headed sparrow 
Taczanowski's Brush-finch 
Tanager finch 
Tricolored brush finch 
Tumbes sparrow 
Vesper sparrow 
Volcano junco 
White-crowned sparrow 
White-headed brushfinch 
White-naped brush finch 
White-throated sparrow 
White-winged brushfinch 
Yellow-breasted Brushfinch 
Yellow-browed Sparrow