In our last post we provided details about the size of the home range of P33 and P27. When graphed against time since release and calculated at the point when the range size appeared stable, estimates were 20ha and 15ha respectively.
However, looking at space use within the home range highlights further differences between the two individuals. We have observed both individuals a) using a den site for several consecutive nights and b) returning to previously used den sites. However, the picture is not as clear cut as this.
The map below shows that over the past 3 weeks P27’s movements have been contained in a specific part of his home range, approx. 4ha in area. Over these 3 weeks he used the same den site on 3 separate occasions (for 8, 2 and 4 consecutive nights) using a total of 4 different den sites. It will be interesting to see how long resources can support such fidelity to this area, especially with the approach of the dry season.
P33, however has been recorded returning to previously utilised areas after prolonged periods away. For example, the area surrounding the release site was used for two weeks before she moved away. She was then found back in this area 10 weeks later: cameras caught 4 photographs of her within a 2 week period.
This information is vital in recommending ways to gather presence/absence/occupancy data through the provision of information about how big survey sites should be and for how long/how often an area should be surveyed to determine if Sunda pangolins may be present.