“Birds” and “airports” are two words that, paired together, don't normally paint the most harmonious picture. So it really raises some eyebrows when China announces plans to build an airport that's for birds.

Described as the world's first-ever bird airport, the proposed Lingang Bird Sanctuary(保护区) in the northern coastal city of Tianjin is，of course，not an actual airport. Rather, it's a wetland preserve specifically designed to accommodate hundreds — even thousands — of daily takeoffs and landings by birds traveling along the East Asian-Australasian Flyway. Over 50 species of migratory (迁徙的）water birds, some endangered, will stop and feed at the protected sanctuary before continuing their long journey along the flyway.

Located on a former landfill site, the 61-hectare (150-acre) airport is also open to human travelers. (Half a million visitors are expected annually.) However, instead of duty-free shopping, the main attraction fornon-egg-laying creaturesat Tianjin's newest airport will be a green-roofed education and research center, a series of raised “observation platforms” and a network of scenic walking and cycling paths and trails totaling over 4 miles.

The proposed Bird Airport will be a globally significant sanctuary for endangered migratory bird species, while providing new green lungs for the city of Tianjin,” Adrian McGregor of Australian landscape architecture firm McGregor Coxall explained of .the design. Frequently blanketed in smog so thick that it has shut down real airports, Tianjin is a city — China's fourth most populous — that would certainly benefit from a new pair of healthy green lungs.