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    Chordeiles

    Mistaken belief that these birds would fly into barns at night to drink the milk of goats!

    While their name suggests they are related to hawks, they are actually members of the nightjar family—birds of the “crepuscular” world that become most active at dawn and dusk. They are characterized by their incredibly long, pointed wings and a somewhat “clunky” appearance on the ground due to their tiny, almost vestigial legs. However, the moment they take to the sky, they transform into sleek, high-speed hunters. Their plumage is a masterclass in camouflage, featuring a complex “bark-like” pattern of grays, browns, and blacks that makes them virtually invisible when they roost on tree limbs or gravel rooftops during the day.

    The most iconic physical trait of the Chordeiles genus is the bold white “stripe” that slashes across each wing. When these birds are flying in the dim light of evening, these white patches act like high-visibility beacons, making it easy to identify them even from a great distance. Unlike many other nightjars that sit on the ground and wait for food, Nighthawks are active “hawkers.” They spend hours in the air, using their massive, wide-gaped mouths—which are rimmed with specialized bristles—to “scoop” thousands of insects right out of the sky. This high-energy lifestyle requires incredible precision, and watching a Nighthawk twist and dive after a moth is like watching a miniature fighter jet in a dogfight.

    One of the most spectacular behaviors within this genus is the male’s “booming” courtship dive. To impress a female, the male will fly to a great height and then plummet toward the ground at breakneck speeds. Just as it looks like he might crash, he flexes his wings downward, causing the air to rush through his primary feathers with a loud, resonant “boom” or “vroom” sound. This mechanical noise, combined with their sharp, nasal peent calls, creates a unique soundtrack for summer evenings across the Americas. Because they often nest on flat, gravel-covered rooftops in urban areas, they have become one of the few members of their family to successfully adapt to life alongside humans, bringing a touch of wild, aerial magic to city skylines.