Plan to boost yellow-tailed black cockatoo numbers. Image by Ralph GreenPlans have been made to boost native food sources for the vulnerable yellow-tailed black cockatoo in the Mount Lofty Ranges.
It is estimated there are only about 2,000 remaining in the area.
Liz McTaggart of the South Australian Environment Department said the birds were flying long distances in search of food.
She said planting would be done at Black Hill Conservation Park this weekend with the aim of improving the food supply in the longer term.
"We're aiming to improve the native habitat to reduce the birds relying on other species, or exotic species, and we want to raise awareness of the vulnerable species through the planting event," she said.
She said a count of bird numbers would be done again soon.