World Migratory Bird Day (WMBD) is celebrated for raising the awareness of the conservation of migratory birds and their habitats. WMBD officially falls on the second Saturday in May, and it's May 9 this year, with the them of "Birds Connect Our World".

Birds play an essential role in the functioning of the world's ecosystems. They directly impact human health, economy and food production. Migratory birds travel around the world to find the best habitats for feeding and breeding. 

Their navigation ability with pin-point accuracy is astounding but their journeys are full of threats, and most of them are caused by human activities. Let's celebrate the day and protect these avian species.  

(Cover image designed by Qu Bo, video filmed by CGTN Nature filming crew.)

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