Photo provided by the Detroit Zoo Wallaby joey parts from pouch at Detroit Zoo Zoo staff say first-time mother Eloise, 3, is very protective of her joey. Staff will determine the sex of the joey when he or she is older and mostly out of the pouch. Photo provided by the Detroit Zoo Advertisement ROYAL OAK — Guests at the Detroit Zoo can now see the baby wallaby, or joey, born in October to mother Eloise, 3, at the 2-acre Australian Outback Adventure. In late April, the joey fully came out of Eloise’s pouch for the first time. The sex of the joey is not yet known, as it only takes brief romps outside of Eloise’s pouch, and, as a first-time mother, zoo staff say she is very protective. Staff will determine the sex when he or she is older and mostly out of the pouch.