This little Swamp Wallaby shows what happens when you are only little, and are thrown out of the pouch on impact with a motor vehicle. This one is lucky, he only has gravel rash, often there are also broken bones and internal injuries.
One this size needs heat, unfortunately he cannot regulate his own temperature, so you would need to wrap him in something soft and warm. Place him on a WARM water bottle until you could get help from the nearest Wildlife organisation.

 

Jack as we named this little guy, had personality plus. He grew up with a number of other wallabies in care, but Jack had to be first at everything. He had to have his bottle before anyone else, he would be out of his pouch for a look to see if anything would take his fancy. e also did something I had not seen before in the nursery pen, he would hop up on top of the shelter to give himself full view of the pen, nothing could escape his curiosity.

 

Even a hay stack placed on top of the shelter one day I was cleaning the pen, was conquered, Jack sat on top, very pleased with himself.