Distribution / Range
They were originally confined to Baja California in northwestern Mexico ranging to northern California, yet remaining west of Sierra Nevada. However, over the past 50 years, they have expanded their territory considerably, due to the planting of ornamental flowering plants and availability of garden feeders.
They are now also found in South Alaska, southern Canada (British Columbia where they are resident on Vancouver Island), Saskatchewan in South-central Canada and many of the central and eastern states of the United States.
Those found within their normal range along the Pacific Coast are permanent resident; while those in the eastern part of their nesting range move westward towards the coast after the breeding season; and some of those will wander far to the east and north. This being said, large numbers of them migrate from California to winter in southern Arizona.
Annas Hummingbird Species Page