Bindi Irwin furious at her brother Robert and 'gives him an ultimatum about Australia Zoo' as he focuses on his solo career

Tensions are rising between Bindi Irwin and her younger brother Robert as he pursues his solo career.

As 21-year-old Robert prepares to host another season of I'm A Celebrity, a rift is reportedly brewing between the two siblings.

According to New Idea, Bindi, 26, wants her brother to be spend more time focusing on their family business.

'Bindi wants Robert to be making decisions about his career that will pay off in a way of bringing attention and people to Australia Zoo,' a source told the magazine.

'That’s always her focus … conservation first, celebrity status second. And she thinks it should be his too.'

Along with their mother Terri and Bindi's husband Chandler, the siblings operate wildlife conservation park Australia Zoo on the Sunshine Coast.

The past year has seen a surge in popularity for Robert, which saw him nominated for the coveted Gold Logie award.

Robert, who boasts an impressive 6million followers on Instagram, also appears to be trying build his TV profile.

Last month, the Wildlife Warrior teased he was forging a deeper relationship with Channel 10 after the success of I'm A Celebrity.

But his soaring success has created a 'professional divide' between the Irwin siblings, the insider added.

'Bindi has always been focused on conservation; she has really resisted doing any projects that didn’t have a huge focus on her life’s work,'the source claimed.

'But it seems Robert is happy to build his profile, knowing that his popularity and status will eventually bring a focus to his work.'

The insider also claimed Bindi is worried that Robert may leave Australia to pursue an international TV career.

This is of particular concern for Bindi, who suffers from endometriosis.

If the condition, which can be severely debilitating, means she has to step back from her operational duties at Australia Zoo, she is worried about what that mean for the family business, the source claimed.

Bindi went public with her heartbreaking diagnosis last year.

Endometriosis is an often painful condition in which the tissue that lines the uterus also grows outside the uterus.

It comes after Robert teased details of his new Network 10 project following the wild success of his I'm A Celebrity... Get Me Out Of Here! hosting role.

He told TV Tonight last week that the 'animal-related' series would be unveiled 'hopefully soon'.

'At this point, it's still a lot of finding out when that's going to work, putting all the puzzle pieces in place,' he told the outlet.

He added he would 'absolutely love' to continue to work with the network on a range of TV projects.

The TV network have seemingly been very keen to lock down the promising young star, recently having Irwin guest host their panel show The Project between I'm A Celebrity seasons.

Since Steve Irwin's tragic death in 2006, his family have carried on his legacy and have won over legions of fans with their upbeat videos on social media.

Australia Zoo was actually founded by Steve's dad Bob Snr in 1970. 

He left the business for good in 2008 - two years after the death of his famous son.