Habitat loss in the sprawling Kilombero valley in the East African country of Tanzania has affected a sanctuary for the world’s migratory birds, posing an increasing peril to the long-distance fliers, local researchers have warned. The wetland, which provides important habitats to many bird species, is under threat from human-caused degradation. Pantaleo Munishi, a professor of ecosystems and conservation at the Sokoine University of Agriculture in Morogoro city, said recurring ...