Newspaper is also pretty good in the compost. It isn't used there often because recyclers have "higher" uses for recycled newsprint.

You want to be careful about the bird guano--it can carry some bad diseases. There is a known vector in disease transmission between birds and humans, particularly in respiratory and flu illness. I just heard a conversation about it on NPR yesterday--on a replay of a local KERA-FM program (the Glen Mitchell show) he had a talk with the author of the book Influenza. Anyway. Birds and bats also carry histoplasmosis.

There are some very good composting toilets out there. Some of them dry the material and then incinerate it, so they have a little vent for the smoke. I have a friend who uses one out at their high-elevation home in the Davis Mountains of west Texas. I'll ask him for information and post it when he responds. Meanwhile, here is a google search about composting toilets.

SRS