Thickets of horse chestnut or of oak brush are favorite nesting sites. 
Nests may be located either on hillsides or in weedy fields, and have 
been reported in secluded gardens in large cities. Each year nests of 
this pheasant have been reported on the grounds of the United States 
8th Army in Seoul where rolling country, characterized by weeds, brush 
and trees, provides good nesting cover. 
The roughly formed nest is hollowed out by the female who lines the 
depression with dead leaves or a few blades of grass. A clutch of eggs 
varies from 8 to 15 which is similar to clutch sizes of the ringneck in 
the United States. 
Breeding season dates vary some with the elevation, but in South 
Korea, Cheju Do and the Tsushima islands the main period is from late 
April into June. In Japan the breeding season is reported as beginning 
in April. Young birds begin to appear in May with hatching continuing 
into June. 
Renesting is common when the first clutch is destroyed before 
hatching. 
Eggs 
In size and color the eggs are similar to those of our ring-necked 
pheasant. They vary in color from dark to pale olive and there appears 
to be some size variation. From Korea, Taka-Tsukasa (18) cited egg 
measurements averaging 42.2 x 33.2 mm. Eggs collected from Tsushima 
island measured 44 x 34 mm. 
The period of incubation varies from 23 to 24 days. According to 
Dr. T. Mori, from Taka-Tsukasa, eggs of the South Korean ringneck 
hatched under a domestic hen after 21 days incubation. 
Brooding and Rearing 
The brooding and rearing habits of the South Korean ringneck closely 
parallel those of the ringneck in the United States. 
Gregariousness 
No difference in the gregarious habits of South Korean ringnecks 
from those of pheasants in the United States has been noted. 
Psychology and Behavior 
Little is known about the South Korean ringneck's psychology but 
what has been learned corresponds closely to that of the ringneck in the 
United States. The Korean birds are seldom tame in the wild and even on 
game farms retain a considerable amount of this wildness, Although pug- 
nacious during the breeding season, male birds seldom do serious damage 
to one another in their territorial fights. No other game birds seem to 
be persecuted by the male pheasants, Females are seldom pugnacious. 
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