Posts Tagged With: picture

Love is in the Air

Okay, so maybe love isn’t the best choice of words.

The other day I was searching for the natal den of one of our trans-located females.  Having narrowed the signal down, I thought I knew where I needed to go in order to find her.  As I was riding on the ATV past an old road, I caught a “fisher log” out of the corner of my eye.  Now I often see fisher shaped rocks and logs, and 99 times out of 100 they are just that.  This time however, as I backed up to get another look, this particular log turned around and loped off!

I quickly grabbed my gear and started walking after the fisher, thinking it was probably the female I was looking for.  As I walked a ways down the road I realized that although I was extremely close to the female, her signal indicated that she was not moving.  Just then, one of the Argos collared males appeared and started to approach me!  He got about 15 feet away, then moved up-slope towards a large tanoak.  After sniffing around the base of the tree for a few seconds he slowly walked off.  Not surprisingly, this turned out to be the tree the female was in!  This was the first time I have personally spotted a male at a den (although it isn’t too uncommon among the field crew, and our cameras detect it frequently).  It was certainly nice of him to lead me to the tree she was in.

The spring denning time coincides with the breeding season for fishers.  For us on the ground, it is probably one of the best opportunities to spot the males out in the woods.  Males are busy seeking out the females, and just like in this case, often end up at their dens.  I put up a camera pointing at the tree, and it caught a cool series of pictures.

Image

The male in the picture is not the male that led me to the den.  He is un-collared, and appears to be quite a bit smaller than the one I saw there.  It wouldn’t surprise me to catch some larger males visiting the den in the next few days.  This particular female has been in the same tree for a few days now, indicating this this is probably her den.  We are starting to see many of the females we are tracking settling into denning behavior, but more on this in a few days!

 

Advertisements
Categories: Updates | Tags: , , , , , | Leave a comment

To Den Or Not To Den?

That is the question. That time of year is rapidly approaching once again, expectant mothers on and around Stirling will soon have to pick their spot and settle down to the task of raising kits. The den season, particularly the early rush to pinpoint natal dens (those in which a female gives birth as opposed to the maternal dens she will use later in the season) is one of our busiest periods on the ground and from a personal perspective, one of the more rewarding.

This will be the fourth season in which Fishers have denned on Stirling since the reintroduction began and again it offers some potential milestones for the project. We have already seen the birth of the first kits sired on the district, the one to watch out for this season is the potential to confirm the first litters born to females native to the district. Although it is very possible that this happened last year we were not actively tracking any females born on Stirling who were potentially reproductive during the 2012 den season. Currently we are tracking 4 such animals and barring any mishaps we expect to locate natal dens for each of them should they give birth this season.

From the table below you can see that this year we are tracking 11 females which we believe could reproduce. Besides the 4 animals mentioned previously we have 5 year 2 translocates, all of which have produced kits previously and 2 year 3 translocates, only one of which has reproduced before.

Image

Females with the potential to reproduce in 2013

As a point of comparison, ahead of the 2012 season we were tracking 10 potentially reproductive females, consisting of a spread of year 2 and year 3 translocates. Ultimately we confirmed natal dens for each one of these animals.

There is also a slight possibility that some of the 4 females we caught in the fall of 2012 and deemed to have been born that spring were actually born in 2011 and would therefore be able to reproduce this year. So, although we think this unlikely we will have to keep a close eye on what these animals are doing to be sure we don’t miss anything.

Doubtless you will see more from us as we start confirming dens and setting remote cameras. Over the first 3 years we have seen the den season really start to kickoff in late March with our median date of den confirmation (this date can sometimes be a day or 2 later than the kits actual date of birth) being March 30th. The majority of dens are generally found within a week or so around this date although our data shows a spread of about a month for the population as a whole. Our earliest record thus far is March 17th, only 1 week away!

Here is something you’ve seen before to whet your appetites.

714C2

Hopefully new pictures will follow in the next month!

-CAB-

Categories: Updates | Tags: , , , , , , , , , , , , , , , , | 1 Comment

Kits, Part Deux!

We’ve recently got some more pictures back from den cameras and verified a few additional kits!  Thus far, we have seen kits from 5 of 9 denning females, for a total of 9.  The other females have either not moved dens yet, or made it past our cameras without triggering them.

714C2, Kits 1,2, &3.

First came pictures of three kits from female 714C2, who was released last fall.  She moved these kits back into her first den (though possibly a different cavity) for a few days, which was something we hadn’t seen before.

Next we saw two kits from 2189C, an animal who was also released last fall and has since made her way to the northeast side of the property.  She has denned up fairly high at ~5500 ft., and interestingly there was a marten that came by her den!

Some of the coolest pictures (in my opinion) from this denning season came from cameras on 182F4’s den.  She brought her kits down the tree and allowed them to explore for a few minutes before they headed off to the new den (only about 50m away).  It appears that females are beginning to spend less time in dens and more time out foraging, which makes the task of finding new dens more difficult.

Anyway, here’s the pics.  Enjoy!

 

2189C’s Kits 1 & 2.

 

182F4 letting the kits explore.

Keeping a lookout.

 

 

 

 

 

 

 

 

 

 

182F4’s kits playing.

Categories: Updates | Tags: , , , , , , | 1 Comment

Red-tailed Peril

To add to my previous post I thought I’d share one of the more impressive series of images from a den thus far;

This slideshow requires JavaScript.

We believe the Red-tailed Hawk you can see entering and exiting the upper left of frame in this series was attempting to steal the prey item being carried by female 199B9 (center frame) to her natal den in April 2011. Whatever the reason, she survived unscathed and went on to occupy 2 maternal dens through the 2011 season before her VHF transmitter finally failed.

-CAB-

Categories: Uncategorized, Updates | Tags: , , , , , , , , , , , , | Leave a comment

Creatures of the night

With the belated and thus far underwhelming winter storms making an appearance recently a few of us have found ourselves with time on our hands away from the field. In light of this situation the ever industrious Aaron has, among other assignments, set us to work organizing a digitalized mountain of trail camera pictures.

As a (more?) naïve youth I used to quite enjoy going through these pictures, then I came to work in bear country…needless to say, the novelty has worn a little thin. For the uninitiated; it is a favorite pastime of black bears to find, wander around in front of and then try to eat trail cameras, this can become a little tedious to watch the 10th or 100th time you see it. Nonetheless, we do get to see some of the more reclusive local residents going about their business too.

I thought I’d share a few recent favorites to add a little color…then I realized they were all night shots.

Enjoy!

-CAB-

Categories: Updates | Tags: , , , , , , , , , , , , , , , , , , , , , , , | Leave a comment

Blog at WordPress.com.