29 January 2018

Rock Rats

The Namaqua Rock Rat was one of the most frequently camera trapped rodents at Paarl Mountain Nature Reserve.

Namaqua Rock Rat (Namakwa-Klipmuis  - Micaelamys namaquensis) at Paarl Mountain

Based on my data, these rodents are mostly nocturnal. However, they show a very strong preference for the twilight hours, more so than any of the other rodent species camera trapped on the reserve. I might go as far as to say they have crepuscular tendencies...

Mother and youngster during early morning twilight

Interestingly two thirds of all observations were during times when the moon was more than 50% full. The exact opposite is true of the Large-Spotted Genet, which is a nocturnal predator and always on the lookout for rodents... I wonder, is this difference due to the genet having to work harder to find the rock rats during the dark nights, or are the rock rats more vulnerable to predation on dark nights and thus don't move around as much?

Showing off his bad ass notched ear

I also noticed more individuals with notched ears than I'm used to seeing in other rodent species. I'm not sure what the cause is, but I'm guessing it is related to living in between the rock crevices. Or maybe it is simply part of their hidden rock and roll lifestyle.

30 December 2017

Boulder Shrews

Towards the end of 2017 I finally found a good location with lots of shrew activity.

SecaCam HomeVista keeping a wide eye on the comings and goings underneath a boulder at Paarl

Unfortunately my Birdcam 2.0 is no longer working. As a result I don't have any camera trap that can take good color photographs (white flash) to help with identifying the species...

My best guess is Reddish-Grey Musk Shrew (Rooigrysmuskusskeerbek - Crocidura cyanea)

The SecaCam HomeVista might be very good at detecting the shrews, but the IR images just aren't as good for identification. The feet seem to be very light above, also the flanks and belly seems light. The general shape and size, as well as snout and tail length also seem to point towards Reddish-Grey Musk Shrew, but it is hard to be sure, at least for me.

Looking for something tasty to eat, maybe a scorpion would be nice?

I found a couple of scorpions hiding under the rocks nearby. Most were pretty small and would surely be a tasty treat for a hungry shrew.

Black Creeping Scorpion (Swart Kruipskerpioen - Opisthacanthus capensis) at Paarl Mountain

I always enjoy getting camera trap images of shrews, even if it is usually hard to make out what species it is. It can even be hard just see what the critter is doing. Shrews like to move fast and most photographs are usually just a dark blur. So, when I get a semi-decent pose, but the shrew decided to look away, I should be grateful. It was at least sitting still in front of the camera trap for a split second...

Shrew looking over its kingdom: "everything the light touches" (erm or is it the other way around...)

I'm wrapping up my camera trapping efforts at Paarl Mountain Nature Reserve. The first part of 2018 will most likely revolve around getting the data in order. I usually end up taking a small break between large camera trap projects. Hopefully later in the year I'll get around to doing some short camera trapping sessions at other interesting locations in and around Cape Town.

30 November 2017

Snake!!!

Over the years I've recorded all sorts of "coldblooded" animals on my camera traps, from frogs to insects. Most of these critters didn't trigger the camera themselves but just happen to be in the background while another animal passed by, or was a pleasant surprise in a long sequence of false triggers caused by warm wind or vegetation.

When it comes to reptiles the lizards and tortoises have been the only groups I've managed to photographed. Some of these species even managing to trigger the camera trap themselves, with their own body heat.

However the snakes have always evaded me, until now...

Cape Cobra (Kaapse Kobra - Naja nivea) slithering past the camera trap at Paarl Mountain

There must have been snakes hiding in the background in some of my camera trap photographs in the past, but I never noticed them. This is the first time one is clearly visible in the photos.

The sequence of images showing the snake in action

In this case the camera trap has been triggering almost constantly for a while. The SD card was almost full by the time this Cape Cobra showed up. In fact it was one of the very last set of images the camera trap was able to capture.

I've stumbled upon these guys, and other snakes, a few time while doing my camera trap rounds. I remember one time in particular: I paused a while on top of a flat rock to take a scenic photograph with my cellphone. When I looked down to put my cellphone away I was shocked to see a huge Cape Cobra right in front of me, leisurely slithering away! In fact it was so close that it must have passed practically in between my legs moments earlier, without my knowledge!

28 October 2017

So Few Caracal

I've been camera trapping at Paarl Mountain Nature Reserve for over a year now. In that time I've only recorded a handful of Caracal observations. Caracal were rather common in the other nature reserves I've camera trapped in the past. I'm assuming that something about the habitat doesn't appeal to them.

Nonetheless it didn't prevent me from finding one running over the road one sunny day. I was able to snap a quick photo of the animal sneaking away into some pine trees.

Caracal (Rooikat - Caracal caracal) at Paarl Mountain, near the Afrikaanse Taal Monument

Some time later, at the opposite side of the reserve, I got my first "decent" camera trap photograph of a Caracal.

Caracal heading down the slope towards the road at Paarl Mountain

The photo was taken by my old Cuddeback Capture camera trap. I've been using it extensively since back in 2010 and I'm not sure how much longer it is going to last.

Cuddeback camera trap at Paarl Mountain Nature Reserve

I'll be sad to lose it, because it is by far my best white flash camera trap and leaps and bounds better than what I've seen from any newer Cuddeback model that came after it.

30 September 2017

Finding The Stinker

The camera trap location was a dud. I was in a bit of a rush when I placed it, and now three weeks later I didn't have time to move it. I reduced the sensor sensitivity, to avoid filling up the SD card with false triggers again, and left...

Bushnell NatureView HD at Paarl Mountain Nature Reserve

I didn't have high hopes when I left. Two weeks later I returned and found only two observations. The first one was of a Cape Grysbok, but the last one was a surprise. It was a Striped Polecat. These guys can be found throughout most of Southern Africa, but are usually not very common.

Striped Polecat (Stinkmuishond - Ictonyx striatus) camera trapped at Paarl Mountain

These guys have been seen on the reserve before, so its not a new species, but it always feels good to to get some "hard evidence" in the form of a camera trap photograph of elusive nocturnal mammals such as these.

Interestingly the Striped Polecat might look a lot like a skunk, but it is in fact closer related to the Honey Badger and African Striped Weasel (all being from the Mustelidae family). True skunks (being Mephitidae) are absent from the African continent.