oscilador

Updated: September 8, 2025

Azara, describing a small finch, which he aptly named Oscilador, says that early and late in the day it mounts up vertically to a moderate height; then, flies off to a, distance of twenty yards, describing a perfect curve in its passage; turning, it flies back over the imaginary line it has traced, and so on repeatedly, appearing like a pendulum swung in space by an invisible thread.

W. H. (William Henry) Hudson - The Naturalist in La Plata