Unusual sounds at the museum!
devices, researchers have been able to record, play back and even distinguish
between the calls of different species of bats - a real challenge, considering
their nocturnal habits and normally inaudible cries.
Since the 1950s, bat
populations have been declining across North America, mainly because of people
using pesticides, blocking the entrances to abandoned mines and visiting caves
and caverns in large numbers.
In summer 2000, the Biodôme and the
Société de la faune et des parcs du Québec launched an acoustic
inventory of bat populations.