"The White-backed Vulture (Gyps africanus) and the Lappet-faced Vulture (Torgos tracheliotos) are the primary large vultures of the Southern African carcass economy. The Lappet-faced is the keystone: it alone possesses the bill sufficient to tear through thick hide and open the carcass that all others require. Without it, the sequence does not begin. The White-backed follows in numbers and consumes the soft tissue. The stomach acid of both species registers at approximately pH 1 — among the most corrosive of any bird — and neutralises anthrax, botulinum toxin, and cholera that would otherwise persist in the carcass and enter the landscape. The White-backed Vulture population has declined by more than seventy percent since the 1980s, primarily through deliberate poisoning. The author notes that his previous entries across this volume contain the notation 'vultures present, no further note required' on twenty-one separate occasions. He is revising this assessment. The courtship of the Lappet-faced involves the male presenting a stick of no particular distinction. The female's response is not always encouraging. The author includes this for completeness."
He counted the entries that evening.
Twenty-one. Twenty-one times across the volume he had written vultures present, no further note required — in margins, at the bottom of other animals' pages, as a single line between the warthog entry and the crocodile. He had been noting their presence the way he might note the presence of clouds: real, visible, requiring no further investigation because the category was settled. He knew what vultures were. He had known since his first season here. There was nothing more to establish.
He read the count back.
Twenty-one.
"The author notes," he wrote, at the top of the new page, "that twenty-one entries reading 'no further note required' constitute, collectively, a significant professional error."
He had stayed at the carcass because Cetshwayo had not moved when the Colonel turned to go.
He had stood for a moment, waiting, and Cetshwayo had continued watching the dead impala and the gathering birds without looking up, and the Colonel had understood, with the specific understanding that comes after twenty-three stories of this particular education, that the relevant observation had not yet been made.
He sat down.
The Lappet-faced arrived at half past eight.
It came from the south with the wingspan of a small aircraft — two point nine metres, the reference would confirm later, though the Colonel's estimate on the day was considerably more — wings set in the final approach, feet forward, feathers flaring, landing with a theatrical quality that belonged to something much larger performing for a much larger audience. The White-backed Vultures, sixty of them by the Colonel's count, scattered in every direction.
Then they reformed.
They queued.
Sixty birds in the approximate shape of a queue — shuffling, neck-craning, hopping forward and back — while the Lappet-faced walked to the carcass with the unhurried assurance of something that knows the proceedings cannot begin without it. Which they could not. The Colonel watched the Lappet-faced assess the impala. It located the hide's thickest section. It applied its bill.
The sound was specific and final — the sound of the only instrument in the available landscape capable of this particular task, doing the task.
The hide opened.