vladimirmorozov
Snowshoe hare (Lepus americanus)
One of our commonest forest mammals, is found only in North America. It is shy and secretive, often undetected in summer, but its distinctive tracks and well-used trails (“runways” or “leads”) become conspicuous with the first snowfall.
Well-adapted to its environment, the snowshoe hare travels on large, generously furred hind feet, which allow it to move easily over the snow. In soft snow, the four long toes of each foot are spread widely, increasing the size of these “snowshoes” still more. A seasonal variation in fur colour is another remarkable adaptation: from grey-brown in summer, the fur becomes almost pure white in midwinter. The coat is composed of three layers: the dense, silky slate-grey underfur; longer, buff-tipped hairs; and the long coarser guard hairs. The alteration of the coat colour, brought about by a gradual shedding and replacement of the outer guard hairs twice yearly, is triggered by seasonal changes in day length.
The snowshoe hare’s ears are smaller than most hares’. The ears contain many veins, which help to regulate body temperature; for example, desert hares have very large ears with almost no fur, so the blood can cool in the slightest breeze. Because snowshoe hares live in cold environments, they do not need such big ears to help lower their body temperatures.
Ottawa Green belt. On.
Snowshoe hare (Lepus americanus)
One of our commonest forest mammals, is found only in North America. It is shy and secretive, often undetected in summer, but its distinctive tracks and well-used trails (“runways” or “leads”) become conspicuous with the first snowfall.
Well-adapted to its environment, the snowshoe hare travels on large, generously furred hind feet, which allow it to move easily over the snow. In soft snow, the four long toes of each foot are spread widely, increasing the size of these “snowshoes” still more. A seasonal variation in fur colour is another remarkable adaptation: from grey-brown in summer, the fur becomes almost pure white in midwinter. The coat is composed of three layers: the dense, silky slate-grey underfur; longer, buff-tipped hairs; and the long coarser guard hairs. The alteration of the coat colour, brought about by a gradual shedding and replacement of the outer guard hairs twice yearly, is triggered by seasonal changes in day length.
The snowshoe hare’s ears are smaller than most hares’. The ears contain many veins, which help to regulate body temperature; for example, desert hares have very large ears with almost no fur, so the blood can cool in the slightest breeze. Because snowshoe hares live in cold environments, they do not need such big ears to help lower their body temperatures.
Ottawa Green belt. On.