The unit contains a small speaker so many people can listen at once and it runs for many hours on a 9 volt battery. Then, you'll need a software package to capture the calls. Click here to dowloand a free, shareware sound analysis program, called Spectrogram, that I find very useful. Click your Browser's BACK button to return here when finished downloading. To learn more about how I use Spectrogram and to see some sample bat calls prcoessed using this free shareware, click here.
Bats are truly amazing creatures.
Most people know exactly what a bat is and what it looks like, yet there are many myths surrounding bats that simply aren't true. Bats are not blind, they are not flying rodents, they won't get tangled in your hair and usually they do not bother people. However, they do have an amazing ability that scientists and the military have been trying to uncover for more than 100 years. They can see using sound - this is known as echolocation or biosonar . Even though bats have strong eyesight, they are nocturnal creatures that spend their waking hours flying at night in almost total darkness.