The Black-billed Magpie (Pica hudsonia) is a striking bird species belonging to the corvid family, native to western North America. Adults typically measure between 18 and 24 inches in length, including their long tail, and weigh between 5.1 and 7.9 ounces, making them one of the larger members of the corvid family.

Distinguishing field marks of the Black-billed Magpie include its bold black-and-white plumage and long, graduated tail. The bird has a glossy black head, neck, and breast, contrasted with white shoulders, belly, and underparts. Its wings also display a combination of black and white feathers. The most prominent feature, as the name suggests, is its black bill, which distinguishes it from the closely related Yellow-billed Magpie.

Black-billed Magpies are known for their intelligence, adaptability, and vocal nature. They are highly social birds, often found in family groups or larger flocks. Their loud, chattering calls and distinctive flight pattern with deep wingbeats make them easily recognizable in their habitats.

Black-billed Magpies are primarily non-migratory birds, although some individuals may make short-distance movements in response to seasonal changes in food availability or nesting sites. They are commonly found in open habitats such as grasslands, meadows, and agricultural areas, as well as in urban and suburban environments where they scavenge for food.

These omnivorous birds have a varied diet, feeding on a wide range of items including insects, small mammals, seeds, fruits, and carrion. They are opportunistic feeders and will take advantage of whatever food sources are available to them throughout the year.

Despite being considered common and widespread, Black-billed Magpies face threats from habitat loss, human persecution, and collisions with vehicles and structures. Conservation efforts aimed at protecting and preserving their habitats, as well as raising awareness about their ecological importance, are crucial for ensuring the continued well-being of this charismatic bird species.