"The Nile Crocodile (Crocodylus niloticus) has been, in its present form, on this earth for over two hundred million years. It survived whatever event concluded the age of the large reptiles. It is the closest living relative of the bird, which surprises most people considerably more than it surprises the crocodile. As an ambush predator it is without peer on the continent — patient, precise, and possessed of a strike that operates faster than the human eye can follow. Recent claims regarding tool use — balancing sticks on the snout to attract nesting birds — the author notes with interest but considers not yet conclusively established to his satisfaction."
The safari party arrived at the riverbank at nine-fifteen — four of them, led by a guide whose manner suggested long experience of riverbanks and the things people said at them. They set up at a respectful distance from the Colonel's observation position and began their own survey of the water.
The Colonel noted them and returned to his notes.
The guide, indicating a large crocodile motionless at the river's edge, said something to his party about the stick-tool behaviour — the documented case, the egrets, the nesting season — in the tone of a man sharing something reliably astonishing.
The Colonel looked up.
"Interesting you should say that," he said.
The guide recognised this phrase with the professional instinct of a man who has heard it before and knows what follows. His party turned.
The Colonel explained.
He was measured, initially. The crocodile was, he noted, a creature of extraordinary antiquity — two hundred million years of essentially unchanged form, a record of biological success unmatched by any land predator. He covered the ambush technique with genuine authority: the positioning, the patience, the physiological capacity for remaining motionless for hours, the strike speed that rendered avoidance largely theoretical for anything that had not already left. He covered the maternal behaviour — the nest guarding, the carrying of hatchlings in those same jaws, a detail that surprised people who had not read the literature. He covered the temporal learning — a particular individual in Zambia that had learned the exact return time of a tourist boat and appeared at the bank accordingly, every evening, to the minute.
The tool use claim he set aside.
"Intriguing," he said, "and not without its proponents. However the author's position is that extraordinary claims require extraordinary evidence, and the evidence currently available, while suggestive, has not to his satisfaction crossed that threshold."
He was warming to the threshold question when the guide said, quietly: "Sir."
The crocodile in the shallows thirty yards downstream had, at some point during the Colonel's account, acquired a stick.
It lay motionless in six inches of water with a piece of acacia branch balanced on its snout, partially submerged, the stick horizontal above the waterline. It had been there, positioned thus, for what the guide's expression suggested was longer than the Colonel had been speaking.
Above it, three cattle egrets circled. Nesting season. The egrets needed material. The acacia stick was exactly the right length.
One egret descended.