Josh, Please don't take my words wrong. Missionary work is always seen as GIVING people something. The cultural reality is we take things away and don't always replace them in kind. You might recall Harrison Ford trying to bring ice to the Amazon. Rather than some tome on birdtraps, why not take a few general classes in anthropology so you understand the dymanics of your endeavor. Your best instructors will be the people. It seems to me a Yanamamo would be a better missionary for your conversion to survival expert. At least they would have been, many first nations are being destroyed by mining, timber, cattle and farming ( including narcotics) interests faster than a burning rainforest.