The tracking have been extreme difficulty in two year ago because the transmitter's lifetime has expired and widely of their home-range. These causes effects to learn to their livelihood and next to the population re-introduction process in the further.
สาเหตุเหล่านี้ส่งผลกระทบต่อการเรียนรู้การใช้ชีวิตของพวกมันและ