Endangered species and wild birds are returning to the Han River in central Seoul, signaling improving ecological stability in one of the city’s most heavily urbanized areas. The Seoul Metropolitan Government said that recent monitoring confirmed breeding and habitat activity across multiple species, including herons incubating eggs as well as endangered mammals such as otters and leopard cats. At Yeouido Saetgang Ecological Park, four herons were observed incubating eggs, while more than 100 ca