The sounds on the move and chased by bats can be saved and used for identification to the species level in most cases . The latter method based on ultrasound is advocated particularly in inventories because it is not “ invasive ” (no disturbance because only sounds are recorded) and allows monitoring over long periods (Some detectors can record during overnight).
Kadhaa sampuli mbinu zipo ili kupima aina tofauti na ’ wingi wa popo: kutembelea nyumba, kilifanikiwa au filet, ya. . sauti juu ya hoja na kufukuzwa na popo anaweza kuokolewa na kutumika kwa ajili ya utambulisho kwa ngazi ya aina katika kesi nyingi . njia ya pili kwa kuzingatia ultrasound ni ilitetea hasa katika orodha kwa sababu si “ vamizi ” (hakuna usumbufu kwa sababu sauti tu ni kumbukumbu) na inaruhusu kufuatilia juu ya muda mrefu (Baadhi ya detectors unaweza rekodi wakati wa usiku).