Some sounds just say summer – the chorus of calling insects, water lapping against the shore, the sizzle of meat hitting the grill and the hum of a lawnmower. What about the incessant, nighttime cadence of the eastern whip-poor-will? If you’re unfamiliar with this one, fair warning, the bird’s chanting inspires songs and poetry in some while vexing others. Click here for a sample, courtesy of Cornell Laboratory.