We implanted radio transmitters in 11 armadillos (Dasypus novemcinctus) on Cumberland Island, Georgia, and monitored them seasonally from July 1987 through May 1988. Six individuals survived (S) the entire study: 5 died (D) between 1-4 months post-implantatin. Home range sizes for S individuals did not differ significantly between sexes (N=6; 3 males and 3 females). Mean overall home range size was significantly smaller for S compared to D armadillos for both the minimum convex polygon (MCP) (S=6.55 ha, D = 11.55 ha; F = 12.49, df=1, P <0.002) and adaptive kernel (AK) (S=9.47 ha, D = 18.81 ha; F = 11.07, df=1, P=0.003) methods. Mean home range sizes for S armadillos differed among seasons for both the MCP (summer =5.34 ha, fall =5.23 ha, winter = 1.65 ha, spring =3.95 ha; F =6.58, df=3, P <0.003) and AK (summer = 10.26 ha, fall =8.75 ha, winter =3.70 ha, spring =6.02 ha; F =5.29, df=3, P<0.008) methods. The S armadillos were located at dens significantly (F = 19.46, df =1, P <0.001) more frequently in winter (64.7%) compared to summer (29.7%), and they used significantly (F =9.28, df = 1, P <0.001) fewer different dens in winter (0.24 dens/day) compared to summer (0.66 dens/day). The average number of different dens used by the S individuals during our entire study was 10.9. Dens were typically in burrows, but aboveground nests were also used. About 75% of all dens were under saw palmetto (Serenoa repens).