Willow ptarmigan a range of lower plant species. It is also believed that the greening of parts of the Arctic is affecting Willow Ptarmigan populations by altering the shape and size of the shrubs they are able to feed on. Male willow ptarmigans are territorial birds. Males arrive in the breeding areas and set up territories in April and May, aggressively defending them against male interlopers. When the females arrive a few weeks later, the male performs courtship displays such as aerial manoeuvres, strutting and tail-fanning. When she has chosen a mate and a nesting site, the female lays a clutch of
White Mountain art his 1868 painting titled "". In all, over four hundred artists are known to have painted White Mountain views during the 19th century. They came from the Boston area, Maine, Pennsylvania, and New York. Most of the Hudson River School painters worked in the White Mountains while maintaining studios in New York City, including such well-known artists as Sanford Robinson Gifford (1823–1880) and Jasper Francis Cropsey (1823–1900). Most artists came to the White Mountains in the summer, but returned to their urban studios, or sometimes to warmer climates like Florida, in the winter. Therefore, paintings of winter scenes are not