Several winters ago I discovered a Northern Mockingbird nest in downtown White River Junction, Vermont. Like all birds, mockingbirds are opportunists and utilize whatever material is available when building their nests. Even though it is not a booming metropolis (population roughly 2,500), White River’s relatively dense population is reflected in the building material that these songbirds used. Because they often nest in urban and suburban areas where trash tends to be more concentrated, mockingbirds often line their nests with bits of plastic, aluminum foil, and shredded cigarette filters (see photo). The male constructs the twig foundation while the female makes most of the lining. He often begins building several nests before the female chooses one to finish and lay eggs in.
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