Jays are typically the most aggressive backyard birds, known for varied noisy, harsh calls, and are capable of imitating other birds' calls. Jays, like other corvids, are highly curious and very intelligent birds. The Steller's Jay is native to western North America, closely related to the Blue Jay found in the rest of the continent, but with a black head and upper body. It is also known as the Long-crested Jay, the Mountain Jay, and the Pine Jay. It is the only crested jay west of the Rocky Mountains. The Western Scrub-jay, also known as the California Jay or Long-tailed Jay, is also native to western North America. It is non-migratory and can be found in urban areas, where it can become tame and will often come to bird feeders.