The first batch of nocturnal audio was recorded last night with the digital camera's audio function, I will be reviewing it over the next couple days. If anything out of the ordinary turns up I will post it, I left it on while I was sleeping near the window that is in front of my bed. Sounds from outside come through depending on how far away they are from the house, obviously I have reservations about leaving it outside due to the possibility of it being stolen or getting wet.
There's no way to know what night is a good night for doing that sort of thing, you kind of have to just hope that something was caught. The weather is warming up now and the days are getting longer, it will be interesting to see if that has an effect on what is going on.