Origin
Phasianus colchicus is native to Eurasia. Common pheasant, or ring-necked pheasant, has been deliberately introduced in Europe, North America, Japan, and Australasia as a game bird species.
Life Cycle
P. colchicus are approximately the size of a large chicken with a long, pointed tail, long legs and neck, and plump body. Male pheasants have flashy plumage with bright red faces, iridescent green necks with a thick white ring at the bottom, and a coppery body with flecks. Females are duller in plumage with brown, tan, and black coloration. Male P. colchicus defend their breeding territory with multiple female mates. Female ring-necked pheasants nest on the ground in thick vegetation and lay 10-12 eggs in a clutch. Females incubate the eggs for approximately 23-28 days. Young chicks are capable of flight after 12 days but remain with the female to 10-12 weeks.
Distribution
Common pheasant populations are found throughout agricultural areas and grasslands from southern Canada down into the Texas panhandle over to southern Virginia and from California to Maine.
Control Efforts
Local hunting helps maintain local populations. In the eastern states, P. colchicus are declining in numbers.
https://www.allaboutbirds.org/guide/Ring-necked_Pheasant/id
https://www.audubon.org/field-guide/bird/ring-necked-pheasant#
https://www.cabi.org/isc/datasheet/70470