In introduced North American populations, males have a red face and white neck ring, while females are brown. They search the ground for seeds and insects.
Adult males of the North American ring-necked form have a red face, copper-and-gold plumage, and a white collar. Females are mainly brown.
Common Pheasant chicks move and interact with companions soon after hatching. Long before adulthood, their social associations can differ between the sexes. Researchers investigated these early patterns in parent-free rearing groups.
In controlled housing in Britain, females associated with other females in their first week, while males initially associated randomly. Across the first six weeks, males increasingly associated with males, while females continued associating with females.
In separate choice tests, unfamiliar male and female groups were placed behind partitions. At ages when body size differed between the sexes, chicks of both sexes spent more time beside their own sex. The results suggest that social preferences develop alongside physical growth.
An extinction-risk assessment has not been added yet.
A 2001–2003 study in Austria established insect-rich brood cover on farmland. Wild-breeding pheasant broods selected these areas, and survival was highest among broods whose ranges included them. Providing food and cover can support breeding in this naturalized European population.