A Confusion Of Warblers Got Lost On Their Way To Mexico And Found Themselves In Boulder This Fall

On this month’s Nature Almanac, city lights confused migrating warblers, leading them off-course to a CU-Boulder beech tree with late-season leaves and aphids. Ruth Carol Cushman and Scott Severs look for signs of the mis-placed warblers , and they share how cities can help migrating birds, by dimming night-time lights.