The humor that Zenyatta had drops, and he tunes his senses outwards. He can't feel the rumbling of footsteps since he is in the air, but his microphones can pick up the sounds. There is also a shift in the energy around them, which is the most telling for him.

"I sense something nearby," he says in a hushed tone. "We could try hiding over there."

He pointed to the shade of a large tree with generous foliage surrounding it. At the very least, Zenyatta intends to go there because his metallic body reflects the sun and may catch attention.