Subspecies in Kansas: I. v. virens (Linnaeus) in east, I. v. auricollis (Lichtenstein) in west, intergrading through most of state.
Wilsonia citrina (Boddaert). Hooded Warbler. Formerly common summer resident in east, now rare and perhaps no longer nests in state. No satisfactory breeding record. Three males from Leavenworth County, May 9, 1871, and one from Shawnee County, May 17, 1871, taken by J. A. Allen, are now at Harvard.
No subspecies recognized.
Wilsonia pusilla. Wilson Warbler. Common transient throughout state.
Subspecies in Kansas: W. p. pusilla (Wilson) in east, W. p. pileolata (Pallas) in west; precise distribution in migration unknown.
Wilsonia canadensis (Linnaeus). Canada Warbler. Uncommon transient in east, reported west to Sedgwick and Cloud counties.
No subspecies recognized.
* Setophaga ruticilla. American Redstart. Common transient and local summer resident in east; probably only transient in west but breeding range in state poorly known. Few definite nesting records: Brumwell reported nesting at Fort Leavenworth, Leavenworth County; J. M. Porter found a nest in Republic County, May 22, 1940.
Subspecies in Kansas: S. r. ruticilla (Linnaeus) is breeding form; S. r. tricolora (Müller) occurs in migration.
* Passer domesticus. English Sparrow. Introduced. Common resident throughout state.