Crested ibises are seen at the Chimelong Birds Park in Guangzhou, south China's Guangdong Province, Jan. 26, 2019. A total of 150 crested ibises, a bird once thought to be extinct, have been bred in the past seven years at the park. (Xinhua/Liu Dawei)

Crested ibises are seen at the Chimelong Birds Park in Guangzhou, south China's Guangdong Province, Jan. 26, 2019. A total of 150 crested ibises, a bird once thought to be extinct, have been bred in the past seven years at the park. (Xinhua/Liu Dawei)

Crested ibises are seen at the Chimelong Birds Park in Guangzhou, south China's Guangdong Province, Jan. 26, 2019. A total of 150 crested ibises, a bird once thought to be extinct, have been bred in the past seven years at the park. (Xinhua/Liu Dawei)

Crested ibises are seen at the Chimelong Birds Park in Guangzhou, south China's Guangdong Province, Jan. 26, 2019. A total of 150 crested ibises, a bird once thought to be extinct, have been bred in the past seven years at the park. (Xinhua/Liu Dawei)