Leaving Davis at the barn, Mark walked back out to the middle of the meadow where the sheep had been circling. He unbuckled his tactical belt pack and pulled out a portable handheld barometer—a standard tool rangers used for monitoring localized weather shifts along the high mountain passes.
He turned on the digital display and calibrated the sensor. The screen flickered, then began to register rapid, chaotic readings. The pressure wasn't just dropping—it was spiking up and down by several millibars every few seconds, oscillating wildly while the surrounding air remained dead calm.
Mark stared at the fluctuating screen, the realization suddenly hitting him like a shockwave. The sheep weren't running from a predator on the ground. They were reacting to micro-barometric fluctuations in the air—tiny, intense pressure pockets that human senses couldn't register, but which completely overwhelmed an animal's sensitive inner ear and equilibrium.