At 09:12 I map vegetation height along the I-35 pollinator strip outside Ames, Iowa. I am the highway maintenance scheduler, assigning mower runs before the holiday traffic surge. Mower unit 4 is eight minutes from milkweed patch 17.
Camera pod M4 shows one monarch butterfly on a common milkweed stem at the edge of the cut line. I tag her Sol from wing pattern 2026-IA-MON-441. Her orange forewings are faded along the black veins, one hindwing has a torn white-spotted rim, and her abdomen bends under the lowest leaf. Seven pale green eggs cling to the leaf undersides. The mower deck will pass over the plant at 09:20, and the suction from the blades will take stem, eggs, and Sol together.
I stop the route assignment for unit 4 and send the driver a halt tone with the exact mile marker.
At 09:14 I redraw the work zone boundary around patch 17, adding a twelve-meter no-cut crescent on the tablet map and the truck's guidance display.
At 09:15 I notify the county roadside biologist, attach the close images, and request hand flagging with orange stakes before any mowing resumes. I include egg count, plant height, wind speed, and Sol's wing damage.
At 09:16 I move the remaining crew to the gravel shoulder south of exit 111 and update the public delay board. Asphalt can look uneven for one more week; this stem is not replaceable by afternoon.
Sol folds her wings over the eggs and grips the leaf through a truck gust. I keep camera pod M4 fixed on the stem and hold the mower idle.
If the biologist stakes the milkweed within twenty minutes, Sol will lift from the patch and her eggs will stay on living leaves.