Observation notes: Sunny, clear skies, low humidity, 65-70 degrees, light breeze. We were walking on a grassy, weedy path, between the rip-rap-covered riverbank and the thickly wooded edge of a large, shallow pond, watching a dozen Cedar Waxwings and a couple of Barn Swallows flying out over the river to catch insects. The river at that point is about thirty feet below the path. As we watched, we realized that the birds were catching these black and orange moths. There were so many moths, it was almost like watching a hatch of mayflies. Nearby were oak, sycamore, black cherry, locust, maple, goldenrod, ironweed, oriental bittersweet, honeysuckle, boneset, lespedeza, clover, mixed grasses.