ocr: COMMUNAL NESTS ORE THAN 10 percent of the Mw world's bird species breed in nesting colonies. Despite living together, most of them are strongly territorial, and will not tolerate neighbors that come too close. But in at few species, birds work together to build giant communal nests. One nest can be home to hundreds of breeding pairs, each in its own apartment with a separate entrance. SOCIABLE WEAVERBIRD NEST These African songbirds build buge commt Hnal nests in solitary trees.
