As winter approaches, beavers in Yellowstone are hard at work crafting their intricate dams. These industrious rodents can fell a cottonwood tree in just a few hours by making the trunk unstable and letting the wind finish the job. They then cut the branches into manageable lengths and transport them via purpose-built canals to their dam.

Autumn is a crucial time for beavers as they prepare for the icy months ahead. The sound of running water triggers them to shore up their dam with timber and seal any leaks with mud. This dam not only protects the beavers from predators but also supports other wildlife. Moose, for example, visit the beaver ponds to feed on nutrient-rich weeds that flourish in these shallow waters.

As temperatures drop and the pond freezes over, the beavers’ work shifts. They secure branches to the lake bottom for winter sustenance. Though they can’t cut trees once the lake is frozen, they’ll access these underwater caches through their clever ladder system. Meanwhile, moose also look to benefit from the beavers’ efforts, often trying to reach the branches meant for beaver consumption.

Stay tuned for more fascinating insights into nature’s wonders!