The Steller's Jay (Cyanocitta stelleri) is a jay 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, Mountain Jay, and Pine Jay. It is the only crested jay west of the Rocky Mountains. It occurs in coniferous forest over much of the western half of North America from Alaska in the north to northern Nicaragua completely replacing the Blue Jay in most of those areas.