New figures from conservation group Birdlife Australia show birdwatchers are spending up to $1.1 million a year in the region, and local businesses who rely on the eco-tourists are reaping the rewards.

As forests recover from the Black Summer bushfires, the visitors are also returning, keen to spot wildlife and immerse themselves in nature.

Dr Rochelle Steven, who conducted the nationwide study into the economic value of birdwatching tourism, calculated that the contribution to businesses on the South Coast topped out at just over $1 million.

"Our report found that birdwatching is a lucrative tourism market globally, with national data revealing they spend more than other types of tourists in Australia," Dr Steven said.

"Tourists to the NSW South contributed between $470,500-$1,152,000 with an average spend of up to $790 per tourist per trip; a significant investment by those that responded to the survey.

"We believe this market has huge potential to grow with dedicated marketing."

Locally, the birdwatchers' presence is most welcome.

Fiona McCuaig, Manager of Bodalla Dairy Shed and committee member of Narooma Chamber of Commerce, said tourist spending is essential for keeping the doors open at her business.

"Our beautiful natural surrounds, birds and wildlife are one of the biggest drawcards for visitors," she said.

"Tourists come here to see beautiful forests and the incredible species - like Swift Parrots - that they support. And my business depends on tourists wanting to keep visiting."

Birdlife Australia's case study of the South Coast surveyed a 'key biodiversity area', stretching from Ulladulla to Merimbula.

It found the main species of bird bringing visitors to the region was the Swift Parrot, which depends on local Spotted Gum forests for its' survival.

Other popular bird species in the region included the Little Tern, Hooded Plover, Pied Oystercatcher, Glossy Black-cockatoo and Rockwarbler (NSW's only endemic bird).

With the release of its study, Birdlife Australia is advocating for habitat protection.

Dr Steven said the economic value of birdwatching and nature-based tourism is intrinsically linked to environmental conservation.

"It's important to note that these tourists are seeking such tourist experiences in intact natural areas," she said.

"Of course, the presence of birds and other wildlife is also dependent on the ongoing protection of their habitat."

"As communities are trying to recover from both the bushfires and the impacts of the pandemic, we should make the most of the potential to grow new markets."