Myotis myotis from Portugal

The last example of an application of TT-$\delta$ plots is from a Greater Mouse-eard bat Myotis myotis from Portugal (data courtesy of Ana Rainho, ICN/DHE Portugal). It shows a different pattern (figure 6.24) than the previous ones originating from lynx. The bat utilises two areas dividing the observation period in five phases of equal duration. It first flies in one area, and after a short excursion, it returns to that area again. After that in the third phase it moves to the second area showing a similar movement as the one illustrated in figure 6.20. It then returns back to the first area and finally in the last phase it goes back to the second area. The TT-$\delta$ plot appears to suggest that the bat uses known corridors as it uses similar pathways in different phases within an area.

Figure 6.24: TT-$\delta$ plot for a Greater Mouse-eard bat Myotis myotis from Portugal.