A flock of rare blue-tailed bee-eater birds, which are under China's second-level national protection, have been spotted in Shidian County, southwest China's Yunnan Province.
The county is one of the important habitats of the bee-eaters in Yunnan, and the species' population ihere topped about 2,000 units last year.
Over 1,000 of these rare birds have migrated to a slope next to a highway at the Nujiang River valley in Yunnan. The birds use their beaks and sharp claws to dig holes on a cliff to nest, as they forage and prepare for breeding. Their breeding period is about four months.
They are praised as "China's most beautiful bird" with their dark red feathers in the neck and sapphire feathers in the tail.