Robert and Terri Irwin enjoyed some precious family time in the US last month, catching up with their American relatives.

The famous conservationists were spotted bidding farewell to family and friends outside Terri's sister's home in Oregon.

Irwin matriarch Terri, 59, looked thrilled to be reunited with her loved ones, laughing loudly as the group chatted outside of the property. 

The mother-of-two rocked a casual look, wearing a white cardigan adorned with strawberries paired with jeans.

Meanwhile, Robert looked smart in navy polo top paired with tan pants and brown sneakers. 

He had his hands full with an iPhone and a bottle of water and stayed close to his mother.

The sighting comes after Robert and Terri copped backlash last month after the mother-son duo shared pictures of their recent adventures to Instagram.

'Is Robert and his mother joined at the hip. She is in every pic you see of him,' one person wrote in the comments while another said, 'He's 20 now!' 

However there was plenty of support for their close relationship, with one person replying, 'He's a lucky young man to have her.'

Another wrote: 'People saying why Robert has his mum in so many photos. Remember every day is precious. Life is fragile. The Irwin's like millions of other families have experienced loss on a monumental scale.'

Meanwhile, an I'm A Celebrity... Get Me Out Of Here! Australia producer expressed concerns about co-host Robert's decision to bring his protective mother Terri on set.

Terri accompanied her son on his trip to South Africa as he filmed his debut season of the popular Channel 10 program alongside co-host Julia Morris, 55.

Speaking exclusively to Daily Mail Australia, an anonymous producer has admitted that Terri's presence on set every day is 'a little creepy', saying: 'It is giving 'bringing your-mum-to-school-camp vibes.'

Terri, who has been in charge of Robert and his big sister Bindi's showbiz careers since the death of their father Steve in 2006, has apparently kept a close eye on everything Robert does while working on the program.