Blue-billed Curassows are large, turkey-like birds found in small, fragmented lowland habitats in Colombia. Males and females both have a fleshy blue wattle that hangs below the bill, but only the male grows a cere, or a knob, on the bill. They are primarily found on the forest floor, where they find worms, insects, fruits, and seeds, but they do roost in trees. Males have a loud, distinctive booming call that they use to attract a mate. Blue-billed Curassow young are precocial, meaning they hatch fully feathered and ready to leave the nest shortly after hatching. They stay close to home, though, for several months.

Blue-billed Curassows are Critically Endangered, with roughly 2,500 individuals (around 750 mature adults) remaining in the wild. These birds rely on large, undisturbed tracts of humid forest in lowlands and foothills, and habitat fragmentation has led to a sharp decline for the species.