White-tailed ptarmigan and development of the chicks. This suggests that the hens' food calls assist in enhancing survival rates of juvenile ptarmigans. The young birds remain with their mother throughout the summer and autumn season. The white-tailed ptarmigan is well-camouflaged when on the ground. In his pioneering 1909 book on the subject, "Concealing-Coloration in the Animal Kingdom", the American artist Abbott Thayer wrote: The white-tailed ptarmigan has feathers located on its feet to serve as protection from the extreme cold often experienced in the alpine tundra environment. In addition, these birds have feathers around their nostrils to warm the air prior to
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