Month November 2020

Possums with my new thermal camera!

wildlifewatchingaustralia 3 Comments

The camera was purchased with my own funds and I have received no financial benefits from this review. As part of my blog I would declare if I have been supplied with equipment on the basis for providing a fair review.

For quite some time I have been dreaming of a thermal camera and reading (a little jealously at times) accounts of people using them to find mammals. I was recently very fortunate to be in the position to purchase one! I had initially thought of going for a Pulsar, like many in the mammal watching community, but I contacted Night Vision Australia and they recommended I look at the Wolfcub series of thermal monoculars. Once I explained the way I would be using it, they said that whilst the Pulsar would work, they recommended that Wolfcub had a wider viewing angle and would allow location of mammals without as much scanning.

I wasn’t able to find any reviews on them for Australian conditions and animals, but then worked out that they were rebranded Hikvision thermal monocular scopes – a very well known brand globally, but being sold in Australia under the name Wolfcub. I was able to locate a few international reviews – here and here. My main aim is to find some of the smaller creatures on my hit list which have eluded me so far, such as the honey possum and pygmy possum.

In a nutshell: thermal camera detect heat and resolve it in an image – much like the old-school predator movie where the creature tries to hunt Arnie! They have a focal length much like a camera lens which determines the field of view.

I finally decided on the Wolfcub Explorer 3L – which has a 25mm lens, weighs just under 500g, IP67 waterproof rated and 2m drop proof. In addition, it contains 16GB memory for taking stills & videos. It also has a Wi-Fi hotspot which can broadcast to an app on a smartphone for others to view but also control, take stills & video from another device. It is powered by an internal battery which lasts about 5 hours with the Wifi turned off. It is charged and memory accessed via a USB-C port on the bottom. The features indicate it has an included laser pointer but that has to be turned off for the Australian market to comply with regulations. Images of the unit below.

I played around with it at home but was very keen to get out and test it on some Aussie mammals. I decided to go back to one of my suburban brushtail possum spots as I knew they were there and it’s not too far from home.

I headed to John Oakey park in Gosnells and I have written about it on the blog a number of times before. I initially found the thermal camera a little strange as I found my depth perception suffered just viewing trees through a digital screen.

My car by thermal camera

I soon spotted my first possum – at first by spotlight (as that’s what I am used to) but then quickly found it on the thermal camera. One of the camera features is the green cross which highlights the hottest spots on the sensor. It is the red dot right and below middle.

Possum visible as red dot right and below middle of image.
Right White-hot – Left Fusion viewing palette

I was soon finding many possums and getting used to the strange world the thermal camera exposes. The wolfcub has 4 different viewing palettes: Black hot, White hot, Red Hot & Fusion (predator mode!). I found that initially the red hot palette helped spot possums, but was surprised at the latent heat remaining on tree surfaces, rocks and the pavement.

The below series shots the same possum as I got closer – I guess I was maybe 30-40m away when I was first able to pick up the possum.

This is the same possum once close enough to take a traditional photo.

I was quickly getting the hang of using the thermal for initially finding possums, but also doing comparisons if I could headtorch them from the same distance. In some cases they were not visible just by spotlighting. Spotlighting relies on picking up the reflective membrane in the animals retina – so they can be missed if their head is obscured or turned away. The thermal camera picks up heat but may not penetrate through trunks or thick layers of leaves which may obscure animals as well.

General photos of the possums after locating on thermal.

I also took some video images to give an idea of what it looks like through the view finder. I must say the resolution in the viewfinder is higher than is recorded in stills and video. See below for a video of a possum found on the railing of the bridge over the river.

I have created a YouTube playlist to see more videos.

I found a couple of mums with joeys which was nice to see.

I still have a lot to learn using the thermal camera but it adds to the tools I have at hand. I am yet to try on smaller mouse size creatures as that is the real purpose for buying the camera.

I hope this write-up was useful – I will write up more as I use it. Feel free to contact me directly if you would like to know more.

Tutanning nature reserve with the WA Nats

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In Sept 2019 the WA Naturalists arranged an excursion to Tutanning Nature Reserve (just over 2hrs from Perth, East of Pingelly) – one of the Wheatbelt’s under-visited reserves compared to Dryandra Woodland or Boyagin Nature Reserve. The reserve is 220 ha – remnant Kwogan shrubland with more than 300 species of flora and a vital fauna refuge. It is an island in amongst the cleared agricultural land of the wheatbelt. The reserve is managed by the Parks & Wildlife service of DBCA.

When the excursion was suggested it was recognised I had been before (see blog) so I was asked to lead the excursion and my friend Tanya offered to assist 🙂 We had 12 people attend all up (6 visitors and 1 member) attending their first excursion, an overnight trip.

We stayed at the Percy Marshall Field Station within the reserve. The google map can be found below.

Percy Marshall Field Station

For additional information on the reserve follow these links from the Shire of Pingelly – Tutanning NR & Percy Marshall Field Station (includes track map). It can be booked for a small fee by contacting the Narrogin office of DBCA.

We met at the field station for lunch and explored the building and facilities. I set up my swag on the verandah but there are two rooms with bunks beds and can accommodate 10 people. In addition, there is a kitchen area and toilet/bathroom surrounded by a verandah. Water is supplied from tanks that you need to pump and power comes from a supplied generator.

There were a number of really interesting signs on the verandah telling about the history of the reserve and the field station.

Once we had most people together we went for a drive. The plan was to drive slowly looking for numbats as they are present in low numbers in the reserve, but there are few reported sightings. We didn’t come across any numbats, but on the first drive saw a couple of echidna (Tachyglossus aculeatus).

A couple of people found a huge fungi but I got distracted by a large granite outcrop where we found number a of variegated dtella (Gehyra variegata) underneath rocks. While lifting rocks is a great way to find herps, it is critical to put them back in exactly the same position as it is crucial habitat that is easily disturbed.

We headed back to the field station to prepare dinner and enjoyed a lovely sunset from the verandah as it set over adjacent farmland.

Sunset from field station @ Tutanning Nature Reserve

Once we had enjoyed dinner and some wine we headed out for a nightstalk with a plan to head up to the nearby dam to look for frogs and anything else we might find. Bleating froglet (Crinia pseudinsignifera) and Western Banjo frogs (Limnodynastes dorsalis) were heard in the dam but none seen clearly. Many spiders were seen as their eyes are highly visible under spotlight.

After the walk a few joined me for a night drive – I was hoping for red-tailed) phascogale (Phascogale calura) and tammar wallaby (Macropus eugenii) as they were seen on my previous visit. We headed up to Tammar Rd, adaptly named road as this was the location of the previous sightings. We parked in a clearing and walked along the road and spotted a lovely Western spotted frog (Heleioporus albopunctatus).

Western spotted frog @ Tutanning Nature Reserve

We headed back with no sightings of any nocturnal mammals, but just after turning off Tammar Rd, we were rewarded with a pair of Tammar wallaby (Macropus eugenii) in amongst pink everlastings.

Tammar amongst everlastings @ Tutanning Nature Reserve
Tammar wallaby @ Tutanning Nature Reserve

The next day I woke early, enjoyed breakfast on the balcony and the surrounding bushland.

Bush surrounding the field station @ Tutanning Nature Reserve

We decided to do the Tutanning walk trail which is a 6km moderate Class 3 walk loop that starts at the field station. It has a number of reflective trail markers and interpretative signs. I have included the signs in the images below.

We walked through Sheoaks and found a number of Cowslip orchid (Caladenia flava), Sugar orchid (Caladenia saccharata) and saw a few birds as well.

We then headed through a section with impressive Proteaceae.

Next we came to some higher ground with wandoo woodland – good habitat for numbats and echidna, however no numbats were seen. We did find a very fresh dead fox – possibly a victim of 1080 poisoning. The reserve is baited to protect the native fauna.

We walked through a number of granite outcrops with some amazing moss and climbing Drosera plants with lovely white flowers.

We were on the home stretch of the walk and we came across a number of Echnida – we assume they were either congregating for an echidna train or resting afterwards. It’s an amazing mating behaviour when many males will follow a single female in a single file line! Count how many you can see!

It was so amazing to see so many together. We had been pleased with just the 2 other single sightings the day before. I managed to get a little video of the action as they were all quite active. We kept our distance as we didn’t want to disturb them but one came right up to our group before ambling off!

I managed to get a few photos of the underneath of an echidna while it was climbing a branch showing the spineless furry bottom and amazing claws.

Below you can see evidence of the echidna diggings for termites – they leave a lot of ground disturbed.

Echnida diggings @ Tutanning nature reserve

After this amazing sight we finished the walk buzzing! It’s a great walk and I recommend it. It’s very isolated so you want to ensure you keep safe with friends knowing where you are and proper supplies if you get into trouble.


We returned to the hut and started packing up. In the kitchen we found this interesting diagram of the mosaic fire history of the reserve.

We also enjoyed looking through the visitors book and added our own entry.

We then followed the leaving instructions for the hut and left the reserve. On the way out we found this Fox den (identified by the musty pungent smell) and rabbit warren (copious rabbit droppings).

We all had an amazing weekend and I received a lot of positive feedback. Joan wrote up the club report which can be found here .