BOB GIBBONS / SCIENCE PHOTO LIBRARY BOB GIBBONS / SCIENCE PHOTO LIBRARY
Red-billed queleas (Quelea quelea) perching on a bush. This is the most abundant wild bird in the world. It is found in sub-Saharan Africa, where it feeds on grass seeds and grain. This bird forms huge flocks of many thousands of individuals. Photographed in Namibia.
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