The Black-and-White Warbler

Black-and-white Warblers are tiny songbirds that breed in North America’s deciduous forests and winter as far south as Colombia. They feast on insects gleaned from leaves or plucked from cracks in tree bark. You’ll often find them clinging to tree trunks or the undersides of thick branches — acting more like a nuthatch than a warbler. Like many songbirds, Black-and-white Warblers migrate at night — using the stars to navigate. Unfortunately, nocturnal light pollution can disrupt their sense of direction or cause them to collide with buildings. You can help Black-and-white Warblers by turning off outdoor lights and shading your windows at night, especially during migration season.

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