Hey Boco..or any of you northern trappers..if a marten passes through your area and doesn't get caught how long do you think it takes it to come back?
Is it right there somewhere close or is like a otter or bobcat where it takes it days to come back through the same area?
It depends on a few things.
First,juvenile dispersal in november(here)will have a lot of marten looking for a winter home range,Marten use dispersal routes like other animals.These dispersing juvenile marten is what trappers want to harvest the most of.
Some years,usually cyclical and from my experience the cycle is between 8 and 12 years,there will be a crash of small mammals that is widespread over almost the entire marten habitat.When that happens Adult resident marten will abandon their home ranges en mass and go on the move.(Marten can cover a lot of ground for a small animal)I noticed that the few times this has happened almost all the marten are adults,and where I am located I know when this is happening because I start to catch a lot of marten that are moving down from way up north around the Bay.These are very large marten so easy to distinguish.
After a small mammal crash and the abandonment of the home ranges,the marten population will be very low due to both die off,but moreso from a reproductive failure in the adult females because of their poor conditionin in late winter.
These have been my experience from trapping marten here for 51 years.
Another factor with marten here is their ability or lack thereof to re populate an area of good habitat that has been fragmented and not connected to other core marten habitat.Fragmentation of the habitat occurs mostly here from the past practices of clear cut logging.As long as the juvenile marten have timbered drainages running thru large burns or clearcuts,they use them to re populate trapped out areas.If the habitat is fragmented with no connecting timbered drainages connecting them marten cannot re populate these areas easily,if at all depending on the size of the open areas.
In core habitat Marten maintain home ranges.A male marten home range will cover 2 or 3 female home ranges,and trappers like myself use this fact to exclude the harvest of some adult females when trapping in core habitat,by setting boxes farther apart as opposed to trapping the dispersal routes where it doesnt really matter how close your boxes are..