I have never heard of this particular fisher hunting technique, nor have I seen or read about it before, but there’s no denying that a fisher made these marks in the snow and that they tell the story of how it captured a mouse or vole. It’s likely that the fisher could hear or smell that the rodent tunnel in the subnivean layer was occupied. It looks as though the fisher methodically scraped snow towards the center of the circle, going completely around the tree in an attempt to trap and/or expose the mouse or vole within the circle. It succeeded in opening up the rodent tunnel (the hole is in the dead center of the photograph), and if the tiny droplets of blood on the snow near the hole are any indication, was successful in capturing its prey.
If beavers have bank dens on rivers that remain open all winter, they are not subjected to the confines of a dark, damp lodge for several months. They have access to fresh food year round, and aren’t limited to the pile of aging branches under the ice that they stored last fall near their lodge. On the other hand, beavers that do live in ponds that freeze over often can find an opening in the ice if there’s a big enough January or February thaw. In either case, signs of their activity on land can be found.
For the past two to three months, coyote courtship has been taking place. Both males and females have been marking more frequently, and male coyotes have been traveling further than usual in search of a mate. A female has marked the top of the stump in the photograph – you can see the foot prints she made as she squatted to urinate. The blood-tinged urine indicates that she is in estrus, or heat. With luck, you might hear the duet of a male and female coyote that is sometimes sung just prior to copulation.
Even with the knowledge that the moose is the largest member of the deer family, the discrepancy between the size of its hoof and that of a white-tailed deer’s is impressive. A moose’s front foot track is somewhere between 4 ¼ ” and 7” long, whereas a deer’s front track is between 1 ¼ “ and 4” long. Both have hooves that are heart shaped, and point in the direction of travel. Deer are more hindered by snow than moose, so finding a deer taking advantage of a moose’s trail by stepping directly in the moose’s tracks (see photo) makes perfect sense. (The moose’s foot was dragging as it stepped into the snow, thus causing the groove that leads to the track.)
This may well be the last month until spring in which signs of active black bears can be found – cold temperatures and a poor beechnut and acorn crop may hasten their retreat into their dens. A black bear’s track is fairly distinctive, if only due to its size: 3 ½”- 6” wide by 4”-9” long. Black bears are flat-footed, or plantigrades, and thus you see more than just the toe imprints in a track; the heel pads of the hind feet are larger than those of the front feet. Black bears have five toes on each foot. The smallest, outside toe often doesn’t register. Long, curved nails on a black bear’s front feet are used for marking trees and climbing; the hind feet nails are much shorter.
Can you identify these tracks? They stumped me until the track maker revealed itself. I was in mixed deciduous/coniferous woods, following fisher tracks, when I saw these unusual-looking tracks. It’s hard to believe I’ve never noticed them before today, as the maker of the tracks is quite common. These mystery tracks will be identified tomorrow (1/30/12). Meanwhile, guesses are welcome! (Track pattern is about 5 inches wide.)
It may be possible to tell the difference between white-footed and deer mouse tracks, but I certainly can’t. The only clue that sometimes works is to note the habitat in which you see the tracks– they are somewhat more likely to be those of a deer mouse if they are in a coniferous forest, but not always! White-footed and deer mice often travel on top of the snow. They are bounders, leaving tracks that resemble those of a miniature rabbit, with the larger back feet landing in front of the smaller front feet. There is often a tail mark, but not always, as they can and do hold their tails vertically at times.