The home of the endangered sea cow is enjoying a flying visit from some airborne guests, around 40,000 of them! Check out the migratory birds at Hepu Dugong National Nature Reserve in south China!<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline