Friends of Tarra-Bulga have now been using remote cameras within the park to monitor wildlife for over three years. The table below shows results adjusted for the number of days cameras have been active in the field. We currently have eight cameras that are moved around to different sites on a regular basis. As of January 2015 the cameras had spent a combined total of over 5000 days in the field and were triggered by animal movements over 10,000 times.
The results show a number of interesting trends. For mammals most species have not varied much in the frequency of sightings over the 3 years with a few exceptions. There was a large jump in Koala sightings in 2014 most were at one site where a Koala developed a routine of passing by every couple of days. Feral Cat numbers have risen each year and Ring-tailed Possum sightings seem to have declined. (the figures for Ring-tails have been influenced heavily by one popular site).
There has been a massive jump in the numbers of birds that the cameras are detecting. The number Lyrebirds passing cameras have doubled each year. Bassian Thrush (Zoothera lunulata) sightings increased around 600% in 2014 and Brush Bronze-wing numbers skyrocketed from only 15 sightings in 2013 up to 404. Crimson Rosellas, Eastern Whipbirds, Pilotbirds and *Common Blackbirds all had a significant rise in detection. Two smaller species the White-browed Scrubwren and the Superb Fairy Wren were also ‘captured’ more often.
A reason for the jump in bird numbers may be due to camera placement. One site used in 2014 was very popular for ground dwelling bird, however this does not fully explain the rise, other camera sites were used in both years and showed a big increase ground dwelling birds from 2013. Fox control efforts in recent years may also be a factor helping the birds numbers increase. Our results have picked up a small rise in Fox numbers over the last few years. As our monitoring continues, time will tell if this greater abundance of bird sightings will be maintained.
|Eastern Yellow Robin||2||3||8|
|Wedge tailted Eagle||2||0||0|
|White Throated Tree-creeper||0||0||3|
|Long Nosed Bandicoot||197||81||185|
|Small Mammal – Unidentifiable||47||67||44|
|Large Mammal – Unidentifiable||33||16||29|