AFAIK you will not get anything that will work in total darkness. With wildlife you should have at least the light from the moon & stars etc, if not surrounding street lights (if in the town etc). With a bit of luck this should be enough to give some form of recording when useing say a Sony camcorder with its nightshot mode. I've never used this feature (not on my cam plus no use for it) so have no idea as to how good (or bad!) it is, but some others have used it and say the newer models are getting better - just don't expect it to be anything close to what you will see on TV.
Mark.