Baby Swallows Counting Off

Occurred on July 29, 2023 / Zhengzhou, Henan, China

Info from Licensor: "Four baby swallows in a nest were making sound by opening their mouth widely. It looks like they were counting off in their own way. This footage was filmed by Li Kai in Zhengzhou, Henan, China, at 19:10p.m. on July 29, 2023.
The filmer mentioned that 'Actually, that sound of counting off was from my son while he was imitating a dog’s barking.'"