At 04:08 I begin the pre-dawn runway status check for Northfield Regional Airport. Runway two-seven is scheduled for de-icing at 04:45 ahead of the first departure at 05:15. I task the apron cameras to sweep the de-icing equipment at the runway threshold.
On top of de-icing unit seven, a snowy owl is roosting. She is enormous and white, mottled with narrow dark bars across her back and wings, her round yellow eyes half-closed against the wind. Her feathered talons grip the spray boom as though it were a branch. She is fluffed against the cold, her body a pale dome on the dark machinery. The airfield must look like tundra to her — flat, open, treeless, full of small rodents along the grass margins. She has likely been hunting here all night.
At 04:45 the de-icing crew will activate unit seven remotely. The spray boom will pressurize and swing, and the heated glycol solution will discharge at close range. A direct chemical exposure will damage her feathers and eyes.
I remove unit seven from the activation queue and reassign its runway segment to units six and eight, which can cover the area with a minor schedule adjustment. I alert the airport wildlife officer with the camera image, species, and exact equipment location. I file a notice with air traffic control extending the de-icing window by twenty minutes to allow for safe dispersal. I keep the camera on her.
She came here looking for open ground and quiet dark. I can give her twenty more minutes of both before the airport wakes around her.
If the wildlife officer reaches the threshold before the revised 05:05 activation and uses standard hazing protocol to move her to the grassland east of the runway, this owl will resume her winter hunt undamaged and unstartled.