A recent post reporting on the results of our camera trap monitoring program for 2013, identified a trend with Swamp Wallabies where numbers photographed by across the park by camera traps dropped very sharply after July. We have no real explanation for this, but as we gather further data, it will be interested to see large annual fluctuations in the Wallaby count continues.
We had an inquiry as to whether it was more common to record Swamp Wallabies in daylight or during the night-time, which is an interesting question and one which is easy to work out from our database. So after crunching some numbers here are some answers, not just for Swamp Wallabies, but for all our commonly recorded species.
Swamp Wallaby triggers are fairly regular at any time of day or night, they do seem to slow down as you might predict in the middle of the day, but then fire up to have their peak numbers in the early evening.
Although it is not particularly uncommon to see Wombats out during the day sometimes, perhaps surprisingly we have never had one trigger a camera between 8am to 4pm. They seem to have peak activity in the evening and another peak around 4am.
It’s no surprise that these Bandicoots are rarely seen, although we get fairly regular photos of them, they seem to have a definite peak of activity between 2am and 4am.
The graph shows here that there is never any time of day for animals to be complacent. Foxes can be active at any time of day, seems like they are marginally more common at night. Also have data on Feral Cats, they too can be around at all hours, but seem less likely than a Fox to be around in daylight.
Lyrebirds in Tarra-Bulga obviously need to make the most of the daylight hours. It seems there is a slightly greater chance they will be snapped by a camera in the morning, but overall any time of the day is good for them.
This post is a summary of the Remote Camera Monitoring results over December and January 2012/13
Camera 1 – Still out of action after it was attacked by an aggressive lyrebird.
Camera 2 – Located in mature Wet Forest in the Tarra Valley was quite a prolific site, with the camera picking up lots of small birds e.g. White-browed Scrub Wrens and Bassian and Grey-Shrike Thrushes, as well as mammals such as Antechinus and Long-nosed Bandicoots, unfortunately there were plenty of Foxes and a Feral Cat present. Also plenty of Wombats, Wallabies and some Brushtails.
We recently moved one of our cameras down to a site in the Tarra Valley section of the park, to get a better idea of what wildlife is hanging around there. After the camera was checked the first time we had plenty of shots of Swamp Wallabies but nothing else apart from foxes. The camera was then moved a few metres to a new position where it could be set closer to the ground and the difference in the number of species photographed was quite remarkable. There are some great Long-nosed Bandicoot photos along with Antechinus and Rattus pictures, an Echidna and Possums (Not certain whether they are the Common Brush Tailed Possum of the Mountain Brush Tail (Bobuck) or whether we have both, The Bobuck’s have smaller more rounded ears.
Unfortunately there are still plenty of introduced predators at this site with Foxes and Feral Cats present. We have been recording quite a few cats with our monitoring lately.