Abstract: Developmental stability is an individual's ability to buffer its development against developmental noise (Van Dongen 1998). Fluctuating asymmetry, a measure of deviation from bilateral symmetry, is often used as an index of developmental stability (Lens et al. 2002). However, there is some disagreement about the validity of fluctuating asymmetry as a measure of developmental stability. Combining information about immune response and growth may provide a more comprehensive view of developmental stability (Møller 1997, Fair et al. 1999). The ongoing study of effects of experimentally elevated testosterone in female dark-eyed juncos ( Junco hyemalis ) provides an altered developmental environment for their offspring, which may in turn affect developmental stability. Limb symmetry, digit ratio symmetry, cell-mediated immune response (via PHA testing), and mass of six-day-old nestlings were compared in the context of experimental treatment and examined for correlations. The offspring of testosterone-implanted females (T-offspring) exhibited a stronger immune response as measured by swelling thickness, but this difference was statistically significant only when examined at the individual level, most likely due to a small sample size. No other significant differences between treatment and control offspring were found. Significant positive correlations were found between tarsus symmetry and immune response, tarsus symmetry and mass, and mass and immune response, providing linked measures of developmental stability that suggest that fluctuating asymmetry may be combined with other fitness correlates to discuss the effects of developmental stress.