ESTUARY/ITRIESA "If this new airport is built," said Cristine Alcayaga, a former member of the Mexican Congress, "It will mean death for thousands of majestic birds that traverse the North American continent." Mayor Brown said, "Birds know no borders. A duck sitting in the Oakland estuary today may well spend winters in Mexico City. Their habitats deserve protection whatever country they are in." The delegation explained the proposed three-runway airport at Lake Texcoco raises safety issues because birds do not change their migratory patterns. The proposed airport location is used by thousands of ducks, geese, gulls, herons and pelicans. Business Wire (2001). Mexican environmentalists tell Mayor Brown shared migratory birds are threatened. http://investor.cnet.com/investor/news/newsitem/0-9900-10-28-6733941-