"He's grown on me a lot," Ms Lewer said.

She was helping a Murrumbateman horse rehoming agency when someone brought in Eureka and another brumby.

"These guys we're sort of a private surrender from a guy who'd taken them on but didn't quite have the ability to work with them," Ms Lewer said. "They are wild horses at the end of the day."

Ms Lewer is currently working on promoting brumbies at horse shows across NSW to get more people to take on brumbies being removed from Kosciuszko National Park. She's calling for the state government to make it easier to adopt individual horses.

It comes as the NSW Office of Environment and Heritage confirmed no brumbies were removed from Kosciuszko in 2018-19.

The government is currently looking to draft via committee a new management plan but a spokesman for the environment office said "no trapping will happen until the Wild Horse Community Advisory Panel has been appointed".

Scientists have estimated Kosciuszko's feral horse population at 6000, causing damage to waterway and alpine environments which are home to native Australian species.

But last year feral horses were given heritage status by the NSW government, which favoured non-lethal methods to remove brumbies. The government also threw out a draft management plan which suggested reducing the horses from 6000 down to 600 over 20 years with ground culling.

Founder of horse rescue group Help Our Old Friends Survive, Lynette Sutton, said the lack of a management plan is just making things worse.

"It needs to be done," Ms Sutton said. "It's always this stale mate. We seem to get where we think we've got an agreement and then it's just a new government and it's back to the drawing board."

Ms Sutton prepares wild brumbies for rehoming.

She said while no horses were being removed and none were being damaged, Kosciuszko suffered.

But she labelled the science that supported the cull as "biased".

"I'm a horse lover first and foremost but I also love my country, but the problem is what we're seeing is a lack of management," Ms Sutton said.

Ms Lewer said she hasn't seen much proof of the impact horses are causing to the Australian alps, but said rehoming horses should be considered first.

"You can't rehome them all but I think there's more non-lethal methods we could be implementing," she said.

Ms Lewer said Eureka had a "skittish" personality, but most brumbies could be broken in months and were a naturally hardier breed.

"I've seen some horses come out of Kosciuszko that, within a couple of weeks, they're in your pocket," she said.

Ms Sutton said not all the horses in Kosciuszko were worth saving, those that weren't should be euthanised.

Her organisation, based in Berrigan, had rehomed 150 horses since 2010.