Species for Delta County, Iowa
Class Aves
Birds
     Order Passeriformes
Perching Birds and Songbirds
          Family Parulidae
New World Warblers
               Genus Setophaga
None
                    Species Setophaga nigrescens
Black-throated Gray Warbler
          Family Vireonidae
Vireos
               Genus Vireo
None
                    Species Vireo vicinior
Gray Vireo
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