An online resource based on the award-winning nature guide

Red Foxes

Red Fox Vixens Cleaning Out Dens

2-14-18 red fox den 049A2731You may have heard or seen Red Foxes barking in the past few weeks – a sign that their mating season has begun. The skunk-like odor of fox urine at this time of year (particularly the males’) indicates where they have marked their territory. Most of the year Red Foxes are solitary animals, but in January and February it’s common to find the tracks of a pair travelling together.

Vixens (female Red Foxes) are already scouting out this year’s den site. They often clean out several dens on their territory, one of which they choose for their litter. The typical fox den is on a hillside in sandy or soft soil, often in a forest but close to an open area. They may dig their den, or modify the burrow of another animal. Usually there is a source of water within 300 feet or so of the den. There are several entrances, the largest being about ten inches in diameter. The same den may be used for many years, and eventually taken over by a daughter upon her mother’s death.

Finding a fox den is easiest now, when the excavated dirt is obvious on the snow, and tracks leading to and from it are visible. In roughly two months there may be anywhere from one to ten (usually four or five) kits being raised inside the den.

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Striped Skunks On The Move

9-25-17 striped skunk IMG_1777Winter’s coming and in the Northeast, Striped Skunks are preparing for the cold months ahead. Before they usurp the abandoned quarters of a Muskrat or Red or Gray Fox (or bunk with a willing Opossum or Raccoon), they spend a great deal of time foraging and putting on life-sustaining fat. Even though a state of torpor slows their metabolism down during the coldest months, skunks must bulk up in the fall, as they lose up to 65 percent of their body weight over the winter. Thus, they meander far and wide looking for food this time of year. In addition, this year’s young are still dispersing. For these reasons, you may have encountered the smell of skunk or the sad sight of striped roadkills in your travels lately.


Meaty Morsels For Red Fox Kits

5-4-17 snake & foxes 116

All too soon Red Fox kits will have to fend for themselves, but as of right now, they are still enjoying having most of their meals delivered to them by their parents. If you were to sit and watch what tasty morsels were caught and presented to them, you would see many small rodents, especially squirrels, chipmunks, voles and mice, along with insects, birds and more often than you would think, snakes (see photo). Their diet will expand to include fruits and fungi as the summer progresses, but at this stage fast-growing youngsters need the protein that prey provides.

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Weaning of Red Fox Kits Nearing Completion

4-26 -17 red foxes nursingWhen Red Fox kits are about three weeks old they are introduced to solid food. Their mother’s milk continues to provide them with sustenance for several weeks more but it is increasingly fortified by prey that their parents catch. At about five weeks of age, just a week or so after the kits are seen above ground, the process of weaning begins. The mother physically prevents them from having access to her teats by lying down on her stomach or snapping at her kits if they attempt to nurse too often.

The kits in this photograph, taken on April 26 several years ago, are approximately two months old, enjoying what may be one of the last warm milk meals they will ever have.   Weaning is completed at about eight weeks or a little more, when the kits’ teeth have all come in.

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Red Foxes Giving Birth

3-22-17 red fox kit IMG_7433Red Fox vixens are giving birth to one to seven pups (usually three to five) in their underground dens at this time of year. The pictured pup is about four weeks old, and is starting to acquire its sand-colored coat. Red Fox pups are born with a temporary coat of dark grey-brown fur which we rarely see, as they stay in their den for the first month or so, where their mother provides warmth and milk.  At the age of four weeks or thereabouts, the pups begin to emerge from the den and sit, nap and play near its entrance. At that time they grow a second coat that is very close to the color of the sandy terrain in which their den is usually dug. Their red coat, for which they are named, develops later in the summer.

Although it’s too early to see Red Fox pups, keep an eye out for active dens which are easiest to find where there is still snow on the ground, as the dirt around the entrance is usually visible. Males can sometimes be seen going back and forth, delivering food to the vixen and her pups.

The next Naturally Curious post will be 3/24/17.

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.

 

 


Using All Your Senses

1-26-17-deer-urine-049a2725Many wild animals are nocturnal or crepuscular, limiting our chances of firsthand observation of them. Those of us curious to learn more about their lives take advantage of whatever signs these elusive animals leave. In winter, evidence of their presence in the form of tracks and scat can tell us not only their identity, but their diet, direction of travel, size, etc. Beds, kill sites and signs of feeding also provide crucial information. There is one more sign that is often overlooked and under-utilized for identification purposes, and that is the scent of an animal’s urine.

Not everyone will necessarily wish to add this identification tool to their arsenal of naturally curious skills, but for those willing, scent-detection can be extremely useful, especially if conditions for tracking are poor, or if scat is not found. Not only is the scent of a species’ urine distinctive, it can often be detected at a distance. At this time of year (breeding season) red fox urine can easily be mistaken for striped skunk spray. Porcupine urine is strong and distinctive, but hard to describe. Once you’re familiar with it, it can guide you to the location of a den. Coyote urine is very dog-like; bobcat very cat-like. Surprisingly agreeable is the pine-like scent of White-tailed Deer urine (pictured).

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Red Fox Kits’ Hierarchy Established

red fox kits  IMG_2123An average Red Fox litter consists of five young.  For about three and a half months, an underground den is the center of their universe.  While the first month or so is spent inside the burrow, the kits spend much of the next two to three months above ground in the vicinity of the den.  At about four weeks of age, the young foxes establish hierarchy, which involves much out-of-sight altercation.  By the time they are stepping foot outside their den for the first time and we are setting eyes on them, each kit has its place in the dominance hierarchy and peace has returned to the kingdom.  Aggressiveness has turned into the playfulness and comradery we associate with young foxes.

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