Emas National Park, located in south-central Brazil and measuring about 500 square miles in area, is a broad savannah home to the rhea, armadillo, anteater, and numerous other species.
The red-billed quelea, a small bird the size of a sparrow, exists in massive flocks numbering tens of thousands of individuals, and sweep through a landscape devouring everything in its path like a swarm of locusts.
