Francisco Piedrahita: White-throated Sparrow (Zonotrichia albicollis)
Francisco Piedrahita: White-crowned Sparrow (Zonotrichia leucophrys)
Francisco Piedrahita: White-crowned Sparrow (Zonotrichia leucophrys)
Francisco Piedrahita: Golden-crowned Sparrow (Zonotrichia atricapilla)
Francisco Piedrahita: Golden-crowned Sparrow (Zonotrichia atricapilla)
Francisco Piedrahita: American Tree Sparrow (Passerella arborea) (Spizelloides arborea) (Spizella arborea)
Francisco Piedrahita: American Tree Sparrow (Passerella arborea) (Spizelloides arborea) (Spizella arborea)
Francisco Piedrahita: Lincoln's Sparrow (Melospiza lincolnii)
Francisco Piedrahita: Lincoln's Sparrow (Melospiza lincolnii)
Francisco Piedrahita: Song Sparrow (Melospiza melodia) (Melospiza melodia kenaiensis)
Francisco Piedrahita: Song Sparrow (Melospiza melodia) (Melospiza melodia kenaiensis)
Francisco Piedrahita: Red Fox-sparrow (Passerella iliaca)
Francisco Piedrahita: Swamp Sparrow (Melospiza georgiana)
Francisco Piedrahita: Green-backed Sparrow (Arremonops chloronotus)
Francisco Piedrahita: Chipping Sparrow (Spizella passerina)
Francisco Piedrahita: Chipping Sparrow (Spizella passerina)
Francisco Piedrahita: Savannah Sparrow (Passerculus sandwichensis)
Francisco Piedrahita: Savannah Sparrow (Passerculus sandwichensis)