The multi-spur chicken breed, previously thought to be extinct, is now flourishing in Vietnam's Tan Son mountainous district, contributing to the reduction of hunger and poverty. The district is home to 25,000 - 30,000 of these chickens, with the meat selling for 180,000 - 200,000 VND/kg. The Tan Son District People's Committee is working on preserving and developing this breed through policy support, branding, and market expansion. They are also collaborating with the Department of Science and Technology of Phu Tho province to certify 'Tan Son multi-spur chicken' products. The 'Tan Son multi-spur chicken' brand was approved by the People's Committee of Phu Tho province and certified by the Department of Intellectual Property, Ministry of Science and Technology in 2018.