Ah, that makes sense then!

Well, sources are important. Without sources, how can I find out if what someone says is true, or if it's just something they make up? It's not that I don't trust David Attenborough or any of the other nature documentary makers, but it's still nice to be able to verify it for myself to find out how accurate they are :)

Thanks for your comments by the way! I appreciate that you are taking your time to share your thoughts with the rest of us.