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From 1968 to 1984, frequencies of color phenotypes of feral swine (Sus scrofa Linnaeus, 1758) were studied at a site in South Carolina, U.S.A. A Chi-square analysis indicated significant changes in these frequencies across time. There was an abrupt decrease in the frequency of spotted animals between the 1976-1977 and 1982-1984 sampling periods. There were no significant differences between the 1968-1969 and 1976-1977 frequencies, and there was no significant change in the frequency of solid white animals over entire study period.

Temporal dynamics of color phenotypes in an isolated population of feral swine