On 11 and 12 February 2000, we searched for dead raptors and ravens beneath 1,612 consecutive power poles near the village of San Pedro (30°51'N, 108°23'W) in northwestern Chihuahua, Mexico. Two of us (Cartron and Manzano-Fisher) resurveyed 214 consecutive poles along two power lines on 23 and 24 March 2000. The area we surveyed represents one of the few well-preserved grasslands left in Mexico (Miller et al. 1994). It supports the largest complex of Black-tailed Prairie-dog (Cynomys ludovicianus) towns remaining in North America (Ceballos et al. 1993), along with relatively high numbers of wintering and nesting raptors (Manzano-Fisher et al. 1999). Power lines are also present in the area, some of them built at the edge of, or within, the boundaries of prairie-dog colonies.