If you look in the archives you will find that there have been other suggestions, but joey is the best documented.
Young wallabies are known as joeys, like many other marsupials.
Marsupials give birth to a live but relatively undeveloped fetus called a joey.
Kangaroo pouches are sticky to support their young joey.
In this part of the lake, commons toads nidify and you can see grebes (or loons) swim with their joeys and heard nightingales sing.
Kangaroos are sometimes seen with a joey in their pouch.
After this period, the joey begins to spend increasing lengths of time out of the pouch, feeding and learning survival skills.
The six to eight joeys have a pouch life of 40 days and are weaned at 70 days.