Avifauna was sampled in 8 developmental stages of loblolly pine (Pinus taeda) plantations and in 2nd growth pine-hardwood forests during the summer, winter, and spring seasons of 1979-80 in the central Piedmont of Virginia. During summer, the number of birds (N) peaked in the 2and 5-year-old plantations and dropped significantly (P < 0.05) in older plantations. Average N of species/stand (S), total N of species in all stands of a given developmental stage (T), and species diversity (H') followed a similar trend. N, S, and T were significantly (P < 0.05) lower in the 2nd growth forests than in younger plantations. N, S, T, and H' were lower in winter than in other seasons sampled. N, S, and H' values were higher in the 2-5-year-old pine plantations than in the older, 7-24-year-old plantations. Values for 2nd growth forests were comparable to those in the 7-24-year-old plantations. In the spring breeding season, N, S, T, and H' were similar to those found during the later summer period. Species equitability (J') remained relatively high in all stands surveyed. J. WILDL. MANAGE. 50(3):406-413 Loblolly pine is one of the major tree species used by the forest industry in Virginia. Although not native to the study area in the central Piedmont, it was introduced in the early 1930's and has proved more profitable than the native pines (Williston and Huckenpahler 1958, Smally and Pierce 1972). Abandoned farmlands were used as plantation sites until the mid-1950's when this type of land increased in value. Forest industries then were compelled to use lower value, 2nd growth hardwood stands for plantation sites by clearcutting and planting loblolly pine. This conversion practice has created major changes in the composition and structure of the vegetation found in the central Piedmont (Felix et al. 1983) and may have effects on nongame wildlife species. The objective of this study was to determine the effects of establishment and development of loblolly pine plantations on the relative density, abundance, and diversity of breeding and winter resident songbirds. We would like to acknowledge P. T. Bromley and J. D. Fraser for their reviews of earlier drafts of this paper.