Sorry, it's not the book this time. I've been around on interview results pages and whatnot. Remember my first released work(links to latest update)? Well, come to find out, those are more accurate than my book or the wiki or even general informaion, it regards Na'vi reproduction. And the news did, I'll admit, make my day. They actually do reproduce via Tsahaylu. So I have some editing to do on my book. I'll let someone else change the Na'vi article.
http://gizmodo.com/5437491/extended-extra+creepy-navi-sex-scene-might-land-on-avatar-dvd
http://blogs.suntimes.com/scanners/2010/01/navi_sex_scene_found_how_they.html
http://www.huffingtonpost.com/2010/02/24/james-cameron-explains-wh_n_475156.html
http://www.wired.com/underwire/2009/12/navi-sex-scene/
http://www.reelzchannel.com/movie-news/5387/alien-sex-scenes-cut-from-avatar-may-pop-up-in-dvd
Although I'm still appalled by the calling it "sex." Even more appalled that I can't find a better name.