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North American Ecology (US and Canada)Nymphalis californica is native to the western United States and southwestern Canada, and is migratory in much of its range as well as east across to the Great Lakes (Scott 1986). Habitats are chaparral and woodland . Host plants are shrubs, restricted to genus Ceanothus (Rhamnaceae). Eggs are laid on the host plant in clusters. Individuals overwinter as adults. There are variable numbers flights each year depending on latitude and some large-scale migrations (Scott 1986).