WOW, now you make me second guess myself but I think that's actually the way they sleep / rest...
I don't think they no one has been hurt, but I will double check online
" What’s cuter than a cuddly kangaroo taking a nap? Nothing. Absolutely nothing. These photos were taken of australian kangaroos while they napped during the heat of the day. As it turns out, these marsupials are more active in the morning and then late at night. They nap during the day to deal with the extreme heat. Don’t worry, these little guys are alive and well. It’s just a normal part of their daily routine. http://www.lostateminor.com/2013/02/25/cute-photos-of-sleeping-kangaroos/