All links of Oxyura

Clay-colored Sparrow (Spizella pallida)Clay-colored Sparrow (Spizella pallida)
Brewer's Sparrow (Spizella breweri)Brewer's Sparrow (Spizella breweri)
American Tree Sparrow (Spizella arborea)American Tree Sparrow (Spizella arborea)
Chipping Sparrow (Spizella passerina)Chipping Sparrow (Spizella passerina)

Oxyura related site: