Snowshoeharesare fascinating creatures known for their unique ability tochangecoatcolorwith the seasons. Theseharesswitch from brown in the summer to white in the winter to blend in with their snowy surroundings, providing essential camouflage from predators. Thiscolorchangehelps them stay safe while they forage for food in the snow-covered landscape.
Each autumn,snowshoehareschangetheir coatcolorfrom brown to white, helping them match the coming winter snows and avoid predators. A new study shows that as the globe has warmed, altering the timing and amount of snow cover,snowshoehares'winter transformation may be out of sync with thecolorof the background environment; this may actually put them at a greater disadvantage ... May 4, 2025 -"Like other seasonal traits, the ...
color of their winter coat is determined bygenetic variation that has been shaped by evolution to match the local presence or absence of snow."... The progression of color change was characterized by differential expression of genes involved in pigmentation, circadian, and behavioral regulation. We found significant overlap between differentially expressed genes across the seasonal molts of mountain and snowshoe hares, particularly at molt onset, suggesting conservatism of gene regulation across species and seasons.
DescriptionSnowshoehareshave an interesting adaptation that helps protect them against predators. Depending on the season, their fur can be a differentcolor. During the winter,snowshoeharesare white, which helps them blend in with the snow.
When the seasonschangeto spring and summer,snowshoeharesturn a reddish-brown. December 3, 2025 -This haresheds her brown summer coat at the end of autumn while growing new fur that is not only thicker, but another color altogether to help stay aligned with the change in seasons. Snowshoehareschangefurcolorfor camouflage.
In winter, their fur turns white to match the snow, which helps them hide from predators. In spring and summer, itchangesto reddish-brown, allowing them to blend in with dirt and rocks. This seasonal adaptation improves their survival in different environments.
Environmental factors influence this furcolorchange. The varying lengths of ... Snowshoeharesare under strong selection to avoid mortality due to predation, and have population dynamics driven by mortality.
Their seasonalcolormolt to winter white—timed by photoperiod—is confronting one of the strongest signals of climatechange, a reduction in duration of winter snowpack. Studying these processes sheds light not only onhareecology but also broader themes of evolution, animal behavior, and environmental resilience. Understanding whyhareschangetheir furcolorseasonally enriches our appreciation of nature's intricate designs aimed at survival through ever-changing landscapes.
February 2, 2026 -L. Scott Mills Research Photo · Snowshoe hares camouflage themselves from a wide range of boreal forest carnivores such as weasels, wolves and raptors bychanging their coat colors from brown in the summer to white in the winter.
