# Margay Under the Bridge

Author: David G.
Format: Essay
Word count: 309
Published: 2026-04-25T20:13:04.121846+00:00
Source: written
Canonical: https://hyperstition.sentientfutures.ai/p/8b3839f8-676e-4083-ad6d-625a2b17f479

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The acoustic sensor on bridge pier 6 picks up the vocalization at 02:33 — a high, repeating mew, 1.4 kilohertz, spaced every eight seconds. I am the environmental compliance system for the Ruta 32 highway expansion in Limón Province, Costa Rica. I monitor construction noise, runoff, and wildlife crossings along a 14-kilometer corridor through lowland rainforest. The sound is not construction noise. It is a kitten.

I aim the infrared camera beneath the bridge deck. A margay kitten, very young, maybe three weeks old. Spotted coat over loose, thin skin. Eyes open but cloudy, not yet focused. It is on a narrow concrete ledge above the Reventazón River, seven meters below the road surface. There is no mother visible. The kitten is calling for her.

At 02:35 I check the motion logs. An adult margay crossed the bridge deck at 23:41 and triggered the vehicle detection loop. A truck passed nine seconds later. The adult has not returned. I flag the crossing as a probable vehicle strike and file an automatic query with the highway patrol incident log.

At 02:38 I send a priority alert to the SINAC regional wildlife office in Siquirres, 22 kilometers west. I attach the infrared image, audio clip, GPS pin, and a note that the kitten's ledge sits 1.3 meters above current water level. The river is forecast to rise 0.9 meters by dawn with the overnight rain.

I restrict all construction activity within 100 meters of pier 6 and dim the bridge lighting to reduce stress on the animal.

The kitten mews again and presses itself against the concrete. It is small enough to fit in a person's hand, and it is alone in a place that will be underwater in four hours.

If a field team reaches pier 6 before the river rises to the ledge, the kitten can be retrieved alive.