Boko Haram have release another propaganda video in which they claim is battle with Nigerian Army. At the background you can hear Boko Haram members speaking Kanuri which confirms that most of their members are Kanuris who speak and understand the lingua franca of Northern Nigeria which is Hausa. Sahara TV posted this video on youtube
https://www.youtube.com/watch?v=FdZrQg0Ds4M
