Fisher (Pekania pennanti) lives in boreal forest across North America. It feeds on small mammals rodents. Its conservation status is Least Concern.
Fascinating facts about the Fisher
- A fisher's reproductive calendar stretches almost a full year: mating occurs in late March-early April, then the blastocyst pauses for ten months until mid-February, when active pregnancy of about 50 days begins. After giving birth to three or four kits, the female can breed again about a week later.
- When hunting porcupines, fishers bite the animal's face repeatedly and usually finish the kill in 25-30 minutes. This focused assault overcomes the porcupine's quills, turning a dangerous prey into a reliable food source that few other predators can exploit, helping control porcupine numbers and protect timber.
- Intense trapping in the 18th-20th centuries wiped fishers from large parts of the U.S., but protection measures have sparked a comeback. In 1961, fishers from British Columbia and Minnesota were reintroduced in Oregon's southern Cascades and Wallowa Mountains; the Olympic Peninsula launch used 90 animals, and between 2008-2011 about 40 were released in California's Sierra Nevada.
- Male fishers can be twice the size of females, reaching 90-120 cm and 3.5-6 kg, while females stay 75-95 cm and 2.0-2.5 kg. The biggest male ever recorded tipped the scales at 9 kg. Males dominate territories due to their larger size.
- Fishers can rotate their hind paws nearly 180°, letting them climb down trees head-first, a trick only a handful of mammals can pull off.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
At a glance
RangeNorth America
HabitatBoreal forest
DietSmall mammals rodents
About the Fisher
In the shadowy recesses of the North American forest, the fisher weaves a secretive path, its dark fur blending seamlessly with the dappled underbrush as it pads silently across the forest floor. With eyes aglow like lanterns in the dark, this sleek and agile hunter navigates the treacherous landscape with ease, its lithe body twisting and turning through the dense undergrowth with a fluidity that belies its formidable reputation. As it moves, the fisher embodies a paradox of elegance and ferocity, a true monarch of the hidden world.
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