 Additionally, there is no discernible trailing edge secondary wing notch amongst the flight feathers, indicating a capacity of sustained flight in species of this genus.Their wings are morphologically similar to the wings of certain semi-arboreal Craciformes, particularly guans of the genus "Pipile".The feet and legs of crested argus are also notable in the presence of curiously developed leg scales in males which are widened in such a matter that they give each limb the appearance of the foreleg of a Varanid lizard.