A white-winged redstart nest is found at an abandoned factory at Miyun District in northeast Beijing. The family has three chicks who still depend on their parents for food. As its name suggests, the adult male is black with a white cap and orange belly, while the female is a warm brown with darker wings and an orange tail.

How do the white-winged redstarts keep their home clean and tidy? 

Each nestling will excrete a fecal sac as a strong "bag" to put their poop! And the parents can easily grab the sac and remove it from the nest.

They were found by the owner of the factory who was going to renovate all the buildings. Considering the chicks are not able to fly, the owner decided to leave the nested building alone and refit others until these birds fly away.

About 'City of Wild'

Nature does not only exist in faraway mountains and oceans, but also in urban cities and our daily life. In the new series City of Wild, CGTN not only unfolds a world of wildlife you've never noticed, but also shares a concept of this year's CBD COP 15 theme: "Ecological Civilization – Building a Shared Future for All Life on Earth."

For more: 

City of Wild: Mallard ducks fight for 'love' in Beijing

City of Wild: Temple of Heaven and its residents during COVID-2019

City of Wild: 'Leading troops' of migrating birds arrive in Beijing

City of Wild: Birds in Beijing's Chaoyang Park welcome spring

City of Wild: The urban life of squirrels

City of Wild: Hedgehogs' secret lifestyle

City of Wild: The rabbits living in a studio apartment

(Video provided by Qu Bo.)

(If you want to contribute and have specific expertise, please contact us at nature@cgtn.com.)