IHE IMPORTANCE OF ENVIRONMENT VERSUS HEREDITY ON RACING ABILITY IN HOMING PIGEONS (Columbus livia) Tracey L. Hewitt School of Science and Natural Resources Lake Superior State University Sault Ste Marie, Michigan 49783 USA December 5, 1995 Abstract. Homing pigeons (Columba livia) are unique in that they have the ability to home. The sport of racing homing pigeons relies on this ability. The purpose of this study was to determine the importance of environment versus heredity on racing ability in homing pigeons. Female birds (hens) from a family of pure Bastin pigeons were analyzed for this study. The degree to which environment, in the form of training and experience, contributes to racing ability was measured by comparing the average racing speed in m/min. of young versus old birds. The speeds were summed and meaned. A two-tailed student's t-test (alpha level 0.10) was conducted. The result of the t-test was significant. The degree to which heredity contributes to racing ability was measured by comparing the average speed differences in mother/daughter versus cousin/cousin pairings. The average speed differences for each group were summed and meaned. A student's two-tailed t-test (alpha level 0. 1 0) resulted in no apparent difference between mother/daughter and cousin/cousin comparisons. From the results, it can be concluded that environment, in the form of training and racing experience, contributes to racing ability. There is a trend for greater similarity of performance between closely related (mother/daughter) birds although no apparent difference in racing ability was found. Overall, the contributions of both environment and heredity in determining the racing ability of homing pigeons appear to be important. Selected References Benvenuti, S. , A.I. Brown, A. Gafliardo, and M. Nozzolini. 1990. Are American homing pigeons genetically different from Italian ones? The Journal of Experimental Biology. 147: 235-243. Stephens, W. 1983. Pigeon Racing. London: Ward Lock Limited , ~ ~ ¬1