Studies in eastern North America suggest that nest predation on forest songbirds increases with habitat fragmentation. However, the majority of these studies have been conducted in highly fragmented suburban/rural deciduous forest habitat, making generalization of the results difficult. The objective of this study was to examine artificial nest predation dynamics along a fragmentation gradient (farm woodlots, logged forest stands and contiguous forest) in the conifer dominated Boreal Mixedwood. Predation was significantly higher in farm woodlots (78.8% edge and 78.5% interior) than the forest interior in contiguous and logged areas (42.8% and 41.9%, respectively). Predation at logged edges (60.0%) was not significantly different from either the woodlots or the forest interiors. All land-uses showed a variety of avian and mammalian predators. Using timer nests, we determined that predation was highest immediately after sunrise, with a second peak around sunset. Census results suggest that farm woodlots have significantly more red squirrels and a very different corvid community than forested areas. Overall, fragmentation due to agriculture seems to have a far greater impact on nest predation in the Boreal Forest than does logging and is in part, due to changes in the predator community. Further work is required to confirm the relative importance of nest predators in different land-uses. Clarification of the impact that logged edges have is alsorequired.