From the Field Notes of Colonel Aubrey Fitch-Harrington, FRS

Observations Upon the Fauna of Southern Africa — Volume III (In Preparation)

“The Crowned Eagle (Stephanoaetus coronatus) is the most powerful eagle in Africa. It takes prey weighing up to thirty kilograms — small antelope, large monkeys, rock hyrax — and carries or drags it to a feeding site. A single talon can apply a grip force sufficient to penetrate bone. The author had ranked it third in his aerial threat hierarchy, below the martial eagle and the bateleur, on the basis of a general assessment of size. Size is not the relevant measure. Pound for pound, the crowned eagle generates more lethal force than any other raptor on the continent. There are documented incidents of attacks on human children in South Africa and East Africa, which the author had filed as anecdotal until he read the documented literature, which was not anecdotal.”

The ranger had mentioned it at dinner and the Colonel had written it in the notes column as possible exaggeration — follow up.

He was following up.

The ranger’s account: a crowned eagle, over several weeks near a farm at the forest edge, had made repeated attempts on children under approximately ten years of age. The attacks had stopped when the eagle’s nest — containing a chick, which explained the heightened territorial aggression — had been located and the fledging season completed. The eagle had not been harmed. The children had not been seriously injured. The farmer had been considerably more vigilant.

The Colonel had heard similar accounts before and had written them as the kind of stories that grow in the telling. He was now reading the scientific literature, which contained not only the ranger’s account but several others, from different regions, different researchers, different periods. Documented. Not growing in the telling. Already grown.

He revised the margin note: possible exaggeration — follow up — confirmed.

He watched the pair from the viewpoint above the forest the following morning.

Both birds were in the canopy edge, where the forest met the open ground, where the prey moved between cover and open ground. The crowned eagle preferred this margin: the drop from canopy into the open, the prey committed to the crossing before it had heard anything.

The forest below the viewpoint smelled of moisture and deep leaf-mould and old trees, the specific smell of forest interior carried on the morning air. He had been watching raptors for two volumes. He had been writing about wingspans and soaring ranges and the fish eagle’s stolen meals. He had not been writing about what the crowned eagle’s feet were designed to do, which was the most important thing about the crowned eagle.

He looked at the feet.

“How heavy can it take?” he said to Cetshwayo.

“Impala,” Cetshwayo said. “Small ones. Young ones.”

“A small impala is —”

“Thirty kilograms. Sometimes more.”

The Colonel looked at the eagle. At the eagle’s own weight, which was approximately four kilograms. He wrote: The crowned eagle takes prey up to eight times its own body weight. The grip force of a single talon is sufficient to penetrate bone. The author had ranked it third in his aerial threat hierarchy. He is revising the hierarchy from the top.