American marten canadensis"), mountain lion ("Puma concolor"), fisher ("M. pennanti"), wolverine ("Gulo gulo"), grizzly bear ("Ursus arctos horribilis"), American black bear ("U. americanus"), and grey wolf ("C. lupus"). In northeastern Oregon, most predation (67%) occurred between May and August, and no predation occurred between December and February. The fur of the American marten is shiny and luxuriant, resembling that of the closely related sable. At the turn of the twentieth century, the American marten population was depleted due to the fur trade. The Hudson's Bay Company traded in pelts from this species among others. Numerous protection measures and reintroduction efforts have allowed
Northern goshawk at is the smallest marten and is sometimes taken as prey by the goshawks, successfully ambushed and preyed on a brooding female goshawk. In Chequamegon-Nicolet National Forest of Wisconsin, the main source of mortality for northern goshawks is reintroduced fishers ("Martes pennanti"), which are the largest kind of marten at and capably kill many chicks, fledglings and brooding females. In contrast, in Europe, the pine marten ("Martes martes") has only been known to prey on young goshawks still in the nest and not adults. Other mammals capable of climbing trees have been observed or inferred to predate goshawks, either mostly