Dog-jackal hybrids etc.

I know you were all disappointed that identifying Canis species in Western Palearctic proved to be so easy and straightforward. Well, here is something to spice it up.

Now, a question. I found an old paper claiming that spotted bats can be attracted by playback of their flight calls. Any suggestions as to where I can download such a recording? (Note: I don’t know if the paper should be trusted; the first thing I noticed is that the coordinates they give for their study site are off by 5 degrees latitude.)