This study was conducted from December 16, 1994 to June 15, 1995, and focused on the breeding habits, feeding habits, and natural enemies of the Swinhoe’s pheasant (Lophura swinhoii), and an estimate was made of the its population size, using a total of five and a half months of field study and 260 man-days. Due a failure to capture the Swinhoe’s pheasant at the beginning of the study, it was impossible to use wireless radio transmitters to locate pheasant nests. Therefore, field study observation was the sole source of information for this study. The fighting behavior of male pheasants was discovered as early as the end of December, which may have been a prelude to the breeding season. Ten records of nests and flocks were found during the study. One nest was located on a steep slope, and the other at the top of a steep slope where the grade began to ease. Each nest had between 2-5 eggs, with 4 and 5 being the most common. It took 2-3 days for all of the juveniles to break out of their eggs. During the study, pheasants were seen perching on trees at night, but juveniles who had just left their nests probably couldn’t jump up into the trees, and so they stayed with their mothers in a safe place close to the ground. The Swinhoe’s pheasant eat a large variety of foods, but they mainly feed on fruits from certain plants. The pheasant’s activity location can be predicted from the distribution of their main food source and their phenological periods. During the study the Formosan crested goshawk (Accipiter trivirgatus) and another raptor were seen preying on the pheasant. After conducting some interviews and surveys, it seemed that diurnal raptors are the main natural enemies of adult pheasants.