Prince William Gushes About Kate Middleton, Calls George a 'Little Monkey'

Prince William is back to work.

Prince William is adding to his work load of being a dad of two little royals.

The Duke of Cambridge just started his first day as an air ambulance pilot on Monday.

Although he admitted to first-day nerves, the royal told reporters that he was excited. "It's sort of a follow-on from where I was in the military with my search and rescue role," he said. "There are many of the same kind of skills and a job like this is very worthwhile, valuable and there's an element of duty. It's an important area for me to be involved in to continue my career and training."

WATCH: See Princess Charlotte's Christening

The royal also admitted that his new work will help him stay "grounded." "I feel doing a job like this really helps with grounding the core of what I am trying to become… just trying to be a good guy, trying to do what you can, trying be a decent individual, thoughtful. Qualities in people that you would want to be associated with," he added.

And it's his wife Kate Middleton's qualities that he really admires. "Catherine has been doing an amazing job as a mother, and I'm very proud of her," he gushed.

PICS: A Royal Family Album

The proud father also described his 2-month-old Princess Charlotte as "a little joy of heaven, but at the same time, it is more responsibility, looking after two little ones, especially when George is around," he shared. "He's a little monkey."

While it sounds like Will and Kate have their hands full, they haven't ruled out the possibility of a third child.

PICS: Prince George Looks Adorable in Same Outfit Prince William Wore in 1984!

"We've only just had the second one," Will said. "You never know what is going to happen in the future."

Check out the video below to see how fussy George was at his little sister's Christening