Mammal Macropod?

[Redtail]

Reposted here with permission from Bushwalking Australia (http://bushwalk.com/forum/index.php)

Taken by the OP on Kangaroo Island, South Australia. The OP has emailed Parks SA for ID.
I've got half an idea, but I'm keen to hear what others may think ...

 

[Hairyman]

Maybe a young eastern grey rather than a tammar.

 

[Redtail]

Museum SA states "young western grey or tammar".