Sing to Sleep. In addition to their stealthy natures and physical prowess, kot bayun have the ability to put prey to sleep with song. They carefully choose victims and stalk them for a time, learning their strengths and weaknesses before making their attack. They lay in wait until their prey is vulnerable and then begin their slumbering song. Those resisting the call to slumber are always the kot bayun's first victims as they launch from cover and attempt to disembowel their prey. In forests with a thick canopy, a kot bayun stealthily creeps among tree limbs, tracking the movement of its prey below.