"Nobody catches the flyers," said the old iguana from his sunny branch above the stream.
The young boa said nothing.
Boas mostly listen.
He was small that year, born in the spring rains in the forests of Central America, one of about 25 brothers and sisters. There had been no eggs to hatch. Boa constrictors are born live and wriggling, and they are on their own from the very first day. No lessons. No goodbyes. Just a whole green world, and a body that somehow knew what to do with it.
Almost everything, anyway.
The flyers were the mystery. Every evening at dusk, bats poured out of the hollow tree by the stream, hundreds of them, spilling into the sky like smoke. Every evening the young boa watched from his branch and felt his stomach vote.
"They are too fast," said the iguana. "Too jumpy. Flying food is a rumor. That is my position."
The young boa kept watching.
That was his way. He was light enough to climb high, as young boas are, and night after night he studied the smoke of wings. And slowly, the smoke turned into a pattern.
The bats always left the hollow tree the same way. Down the gap between two branches, low over the water, the same path, the same bend, like a river of wings that had worn its own valley into the air.
Here is the secret he found, and now it is yours. A river cannot be chased. A river can only be met.
On the next warm night, the young boa wrapped his tail around the low branch, anchored himself, and let his body hang down into the flight path. Then he held still and did what boas do best.
He waited.
The first bats poured past, close enough to stir the air against his scales. He struck at one and caught wind. He struck at another and caught the smell of the stream.
Then a bat came down the gap a wingbeat lower than the rest.
The young boa struck, and the night handed him his first flyer.
He coiled around it swiftly, and then came the family magic. Through his own skin he felt the tiny heartbeat tapping. He squeezed exactly hard enough to make the blood stand still, and when the little heart grew quiet he felt that too, and eased at once. Nothing wasted. Nothing extra. Then he swallowed his meal whole, jaws stretching wide, the way boa jaws are built to stretch.
Hanging there in the dark, full and astonished, he could feel the two tiny spurs near his tail, the leftovers of legs his ancestors walked on long, long ago.
The old story in his bones had brought the squeeze.
The watching had been all his own.
He would grow for years after that night, on toward 2 metres, and hunt a thousand more nights like this one, patient on a moonlit branch while the flyers poured past like smoke.
Some gifts arrive in the bones.
The rest are earned by paying attention.