Pandion haliaetus. Osprey. Occurs irregularly throughout state but less frequently in west. Most records in spring and autumn but a few at other seasons. No definite nesting record.
Subspecies in Kansas: P. h. carolinensis (Gmelin).
Falco rusticolus. Gyrfalcon. Accidental. One specimen: Manhattan, Riley County, December 1, 1880, A. L. Runyan (specimen at Kansas State College).
Subspecies in Kansas: F. r. obsoletus Gmelin.
Falco mexicanus Schlegel. Prairie Falcon. Rare summer and fairly common winter resident in west; occasional transient and winter resident in east. No satisfactory breeding records.
No subspecies recognized.
* Falco peregrinus. Duck Hawk. Rare transient and winter resident, probably more common in west. Formerly nested but no nesting record since before 1900.
Subspecies in Kansas: F. p. anatum Bonaparte.
Falco columbarius. Pigeon Hawk. Uncommon transient and rare winter resident in east; more common in migration in west but status there in winter not known.
Subspecies in Kansas: F. c. columbarius Linnaeus is most frequent in eastern part, west to Reno County; F. c. richardsonii Ridgway is the common subspecies in west, occasional in east; F. c. bendirei Swann is known in Kansas from one specimen (KU 4425) from Ellis County, October, 1875, taken by Dr. L. Watson (identified by James L. Peters).