New Years is a time when many people contemplate shedding those extra pounds gained between Thanksgiving and Christmas. For numerous forms of wildlife, late autumn through winter can be a protracted season of weight loss, however, this is the result of shortages of food during these bleak months, rather than any conscious effort to become trim.
For the meadow vole, a weight loss phase of its life begins in mid autumn, causing this common rodent to lose more than a quarter of its body mass. This natural reduction in the intake of food is triggered by a specific decrease in the amount of daylight, known as photoperiodism, and typically occurs regardless of the availability of items to eat. » Continue Reading.