Host: Chondestes grammacus (Lark Sparrow)
Host: Junco hyemalis (Dark-eyed Junco)
Host: Melospiza melodia (Song Sparrow)
Host: Passerculus sandwichensis (Savannah Sparrow)
Host: Passerella iliaca (Fox Sparrow)
Host: Pooecetes gramineus (Vesper Sparrow)
Host: Spizelloides arborea (American Tree Sparrow)
Host: Zonotrichia atricapilla (Golden-crowned Sparrow)
Host: Zonotrichia leucophrys (White-crowned Sparrow)
Host: Zonotrichia querula (Harris's Sparrow)