[6] The crestless curassow is found in eastern Colombia, southern Venezuela, northwestern Brazil, and southwestern Guyana.

It mostly inhabits rainforest along rivers, though it is also found in gallery forest in the llanos of Colombia and Venezuela.

[6] The crestless curassow usually forages singly or in pairs but also very rarely in groups of up to 10.

The crestless curassow's song is "a low humming or booming 'uuut ... uu-UU-uu-uhoot'", performed year round but more frequently in the breeding season.

[6] The IUCN originally assessed the crestless curassow as being of Least Concern but in 2012 reclassified it as Near Threatened.