Aussie Ark Rangers were treated to a surprise appearance from a three-month-old joey this morning.

Ranger Kelly Davis found the young kangaroo, affectionately named Stanley, in the cold while on her early morning rounds.

The joey was rushed back to Ark HQ to warm up and be checked for injuries.

Fortunately, Stanley was more than okay after being warmed up and given a bottle.

He will be looked after for the next six months before joining the conservation program.