In early part of 20th century, many were killed as pests or poisoned by baits set out for predators. In spite of this, remains common and widespread. Rangeland, conifers, stream sides, forest edges, farms.
Found in many kinds of semi-open country in the west. Avoids unbroken forest, and not found in treeless grasslands or extreme desert situations. Most common in stream side groves of trees in open terrain, farm country, and some suburban areas.
Black-billed Magpies add much to western landscapes, both with their flashy appearance and with their big bushel-basket nests in trees. In an earlier era, farmers and ranchers tried to exterminate this species, but to no avail, and it is common today in open country and even in towns in the mountain west.
From Colorado 2017