I started uploading some bat videos on youtube. Maybe they are easier to watch - because streaming begins immediately and a flash video player is usually installed. All videos have been recorded with Nitemax night vision devices while the sound has been recorded with various heterodyning receivers. Have fun and leave feedback if you like them...
Pipistrellus pipistrellus hunting in the twilight - try to count then :-) The recording was made in April (still no leaves on the tree in the background).
Some Nyctalus noctulae leaving their natural cave in a high tree (I had to use a tele-lens)
bats at a box in late August - I think a male bat is trying to attract some other bats into "his" box.
"water bats" (Myotis daubentonii) at a narrow stream.
bats (Myotis daubentonii) hunting over a small lake in twilight (and moonlight).