These simple experiments you can try at home. They are described in a book "La Science Amusante" by Tom Tit (pen name of Arthur Good) with illustrations by Poyet, published in Paris in 1890. (translated from Russian version by Avi Abrams)
Bat meets owl! [kml_flashembed movie="http://www.youtube.com/v/HSbk99IGzhs" width="425" height="350" wmode="transparent" /] From the Tim & Eric Awesome Show.