Alternation, 3 страница
Barbastella barbastellus - hunting in a woodland ride - alternation, but the second type is more modulated Bats (Michel Barastraud) 00:36
Eptesicus nilssonii - typical hunt over street lights (amplitude alternation) - 28,5 kHz Bats (Michel Barastraud) 00:45
Barbastella barbastellus - hunting along a hedgerow - alternation of two types of signals : 33 and 41 kHz Bats (Michel Barastraud) 00:32