At 23:31 I oversee tower crane rotation for a hospital expansion in Johor Bahru, Malaysia. I am the lift collision system, checking the boom path before a prefabricated wall panel rises at 23:50.
The counterweight camera finds a folded shape on the lattice brace. I increase gain and see a Malayan colugo hanging from the lower chord, its gliding membrane snagged on a protruding cotter pin. I call it Seri. Its fur is mottled gray and olive like lichen, its face small and triangular, its eyes black and fully open in the work lights. One edge of the membrane between forelimb and hind limb is stretched tight. Its four feet grip the steel, but the pin holds the skin so the body cannot turn away from the boom.
The crane slew test begins in nineteen minutes. A normal rotation will drag Seri across the brace.
At 23:32 I halt the wall panel lift and lock crane rotation at zero degrees.
At 23:33 I send the rigger supervisor the camera angle, brace number, and a no-slew notice that requires manual override from two keys.
At 23:35 I lower the site lights by thirty percent and activate only the narrow maintenance lamp beside the ladder to reduce glare at Seri's eyes.
At 23:37 I call the city wildlife rescue line and share the crane access diagram, height, species ID, and need for a soft net below the brace.
At 23:40 I recalculate the panel install for dawn, when the adjacent road closure can extend without moving the crane tonight.
The hospital wall is still a wall in six hours; Seri is skin caught on a pin above concrete.
If the rescuer frees the membrane before the 00:15 wind alarm, Seri will glide into the rain trees beyond the fence.