|Schafer illustrations of "vanished" Michigan mammals|
The fisher, also called pekan, is remarkable for its size — length about two feet, plus another foot of tail.
Fishers formerly were found over most of Michigan, retreating before the axe and trap until they probably disappeared entirely, although there was the possibility a few stragglers might still be present in remote parts of the Upper Peninsula.
Most noteworthy is the predator-prey association developed between the fisher and the porcupine. In fact, Powell and Brander (1977) suggest that their adaptive relationships have been environmentally selected in order that successful coexistence occurs, with depressed porcupine populations causing fisher to depend on other food sources….
|Schafer shows fisher with its eye on a porcupine|
As for my old reference books, they may underestimate today's fisher population, but they still offer a wealth of information.