Identification
The Sand-colored Nighthawk (*Chordeiles rupestris*) is an ethereal outlier among its typically dark, cryptic kin. Measuring about 22 cm, it is strikingly pale, with sandy-grey upperparts finely vermiculated with brown, allowing it to vanish against riverine silt. In flight, it reveals its most diagnostic feature: broad, snowy-white wings tipped sharply with black, creating a high-contrast "dipped in ink" appearance. Unlike the Common Nighthawk, it lacks a bold white throat patch and possesses a shorter, slightly notched tail, giving it a more compact, moth-like silhouette.
Habitat & Range
A specialist of the great river systems of the Amazon and Orinoco basins, this species is rarely found far from the water’s edge. It frequents massive exposed sandbars, river islands, and rocky outcrops throughout lowland South America, ranging from Colombia and Venezuela south to northern Bolivia and central Brazil. You won’t find this bird in deep forests; it demands wide-open sky and silt.
Behaviour
While most nightjars are reclusive, *C. rupestris* is remarkably gregarious and often diurnal. You will frequently spot them huddling in large groups on sun-scorched sandbars. Their flight is buoyant and erratic, a rhythmic flapping interspersed with short glides. They are colonial breeders, scraping simple depressions in the sand to lay their eggs, relying on communal vigilance and "broken-wing" displays to lure predators away from the colony.
Diet
This species is a dedicated aerial insectivore. At dawn and dusk, they perform acrobatic sorties just inches above the water’s surface. They "hawk" for beetles, moths, and winged ants, using their deceptively wide gapes to scoop prey mid-air.
Fascinating Fact
To prevent their eggs from literally "cooking" on the 100°F+ tropical sand, parents don't just incubate for warmth; they act as living parasols. They will stand over their clutch for hours, using their own shadows to provide a critical cooling patch of shade!