Prince William and Kate will spend their final day in Sydney on Sunday with church and a trip to the zoo – and there are hopes George will be with them.

Australians so far have caught only a glimpse of baby Prince George, but that may all change on Sunday.

Since he arrived in Sydney with his parents, the youngster has been kept out of sight at Admiralty House while the Duke and Duchess of Cambridge have undertaken a hectic schedule.

Huge and enthusiastic crowds turned out for Prince William and Kate at their appearances at the Opera House, Blue Mountains, Royal Easter Show , Manly beach, Amberley RAAF base and Brisbane.

George has been remembered – and inundated with presents – at each of these events, but none was really suitable for a near nine-month-old baby.

In New Zealand, he proved himself a royal at his first official duty when he “hosted” a play group event with other babies his age at Government House.

There is no guarantee George will make a public appearance at any event in Australia, and if he does, it will depend on his mood and health.

On their last day in Sydney, the duke and duchess will visit Taronga Zoo to unveil the new bilby enclosure named after their son as part of Australia’s gift following his birth.

If you were a betting person, this could be when George makes his official Australian debut.

And if George does make the short trip from Admiralty House to the zoo, it will be his second close encounter with Australian native animals – if you count the giant stuffed wombat soft toy Governor-General Peter Cosgrove gave him on Wednesday.

The Cambridges are also scheduled to feed tree kangaroos, walk past giraffes, enjoy a bird show, and take in the rhino conservation display at the zoo, before the family flies to Canberra.

William and Kate will start Sunday by attending Easter Sunday services at St Andrew’s Anglican Cathedral in the city.

The royal family’s first official visit to Australia has been a resounding success so far.

In Brisbane on Saturday, they were overwhelmed with the 10,000 strong crowd who waited in 28C heat and sunshine for a chance to meet them after a civic reception.

Earlier, they paid homage to Australia’s military personnel with a visit to Amberley RAAF base where they planted a tree in the memorial guardian and met the family of four diggers who were killed in Afghanistan and Iraq.

“Indeed it is bittersweet. I’d rather have Dave here, and the reason we’re here is because he’s not,” Nicole Pearce, whose husband David died in Oruzgan province in 2007.

“But I think he would be really proud, really honoured to think we had an opportunity like this.”

William, a former RAF helicopter pilot, and Kate were given a full ceremonial welcome to the base and got to try a Super Hornet and simulator.

Kate, dressed in an elegant knee length white dress with a blue poppy motif, took up her husband’s challenge when he asked: “Do you fancy jumping in the back”.

Indeed she did fancy jumping in – but she took the front seat.