We havent had much rain in Melbourne. I think there were some storms up past Sydney this week.
If your after wild roos that are relatively relaxed, enough that you can walk among them and hand feed them, then about 1.5hrs north of Sydney at the old Morisset mental hospital there is a great spot for them, no fences completely free to do as you wish there are usually large groups of roo's spread out over the grounds there. Probably a hundred all up last time I drove around the grounds there.
Plus there's quite a few birds, like kookaburra's, willy wag tales, cockatoo's, Aussie water birds etc there as well.
I should read more thoroughly. My wife parent's live 5mins from here. My father in law often picks up hitchhikers trying to get to the Kangaroos as it would be about a 30min walk. It's a 2 hour train ride from Sydney - if you were interested and depending on timing, I could have a chat with him to see he could meet up and take you to the Kangaroos.