Watch the Planet Earth II trailer: https://www.youtube.com/watch?v=c8aFcHFu8QM *The series will be broadcast on BBC One in the UK this Sunday at 8pm and on BBC America from January 28th* The Kauaʻi ʻōʻō: https://en.wikipedia.org/wiki/Kaua%CA%BBi_%CA%BB%C5%8D%CA%BB%C5%8D For more on langauge-origin theories, this book is very good: https://www.amazon.com/First-Word-Search-Origins-Language/dp/0143113747 music from null and http://www.audionetwork.com/