I'd give some thought to plugging the ears to avoid the animal sounds. One night I was tarping alone with the wind blowing strongly. The tarp kept vibrating and waking me up, so I thought, well, I'll reconfigure the tarp and put my ear plugs in to get some sleep. My tarp was set up low, like a green tunnel. Worked well for a few hours until...
I awake very groggy to the sound of a rustling. Now, if you can HEAR rustling through ear plugs, it must be a LARGE mammal. But I woke up in one of those states wear you just can't move anything. (I think its evolution to keep us from falling out of the trees when sleeping
.) I couldn't get a word, not even a mumble out of my mouth. That's when I started to panic. In what seemed leki forever, I was able to lift one foot and tapped the ground. Like that would help but hey, it was all I could manage
. Whatever it was, it went straight past, never changed speed or direction. I'm very reluctant to sleep with ear plugs anymore.
It's what you can't hear that will definitely get you...