It would destroy itself, and all the terrain around it for a radius of two and a half miles, fusing the landscape instantly into a sheet of glass. A flat, circular sheet of glass. A polarized, limited zone of annihilation. Scant yards beyond its rim a person might escape unharmed, only being deafened and dazzled temporarily.
Hitherto no slow bird had been known to explode so as to overlap an earlier sheet of glass. Consequently many towns and villages clung close to the borders of what had already been destroyed, and news of a fresh glass plain would cause farms and settlements to spring up there. Even so, the bulk of people still kept fatalistically to the old historic towns. They assumed that a slow bird wouldn't explode in their midst during their own lifetimes. And if it did, what would they know of it? Unless the glass happened merely to bisect a town — in which case, once the weeping and mourning was over, the remaining citizenry could relax and feel secure.
True, in the long term the whole country from coast to coast and from north to south would be a solid sheet of glass. Or perhaps it would merely be a checkerboard, of circles touching circles: a glass mosaic. With what in between? Patches of desert dust, if the climate dried up due to reflections from the glass. Or floodwater, swampland. But that day was still far distant: a hundred years away, two hundred, three. So people didn't worry too much. They had been used to this all their lives long, and their parents before them. Perhaps one day the slow birds would stop coming. And going. And exploding. Just as they had first started, once.
Certainly the situation was no different, by all accounts, anywhere else in the world. Only the seas were clear of slow birds. So maybe the human race would have to take to rafts one day. Though by then, with what would they build them? Meanwhile, people got by; and most had long ago given up asking why. For there was no answer.
The girl's sister helped her rise. No bones broken, it seemed. Only an injury to dignity; and to her sail.
The other skaters had all coasted to a halt and were staring resentfully at the bird in their midst. Its belly and sides were almost bare of graffiti; seeing this, a number of youths hastened on to the glass, clutching penknives, rusty nails and such. But an umpire waved them back angrily.
"Shoo! Be off with you!" His gaze seemed to alight on Jason, and for a fatuous moment Jason imagined that it was himself to whom the umpire was about to appeal; but the man called, "Master Tarnover!" instead, and Max Tarnover duck-waddled past then glided out over the glass, to confer.
Presently, the umpire cupped his hands. "We're delaying the start for half an hour," he bellowed. "Fair's fair: young lady ought to have a chance to fix her sail, seeing as it wasn't her fault."
Jason noted a small crinkle of amusement on Tarnover's face; for now either the other competitors would have to carry on prancing around tiring themselves with extra practice which none of them needed, or else troop off the glass for a recess and lose some psychological edge. In fact almost everyone opted for a break and some refreshments.
"Luck indeed!" snorted Mrs. Babbidge, as Max Tarnover clumped back their way.
Tarnover paused by Jason. "Frankly I'd say her sail's a wreck," he confided. "But what can you do? The Buckby lot would have been bitching on otherwise. 'Oh, she could have won. If she'd had ten minutes to fix it.'
Bloody hunk of metal in the way." Tarnover ran a lordly eye over Jason's sail "What price skill, then?"
Daniel Babbidge regarded Tarnover with a mixture of hero worship and hostile partisanship on his brother's behalf. Jason himself only nodded and said, "Fair enough." He wasn't certain whether Tarnover was acting generously — or with patronizing arrogance. Or did this word in his ear mean that Tarnover actually saw Jason as a valid rival for the silver punch-bowl this year round?
Obviously young Daniel did not regard Jason's response as adequate.
He piped up: "So where do you think the birds go, Master Tarnover, when they aren't here?"
A good question: quite unanswerable, but Max Tarnover would probably feel obliged to offer an answer if only to maintain his pose of worldly wisdom. Jason warmed to his brother, while Mrs. Babbidge, catching on, cuffed the boy softly.
"Now don't you go wasting Master Tarnover's time. Happen he hasn't given it a moment's thought, all his born days."
"Oh, but I have," Tarnover said.
"Well?" the boy insisted.
"Well. maybe they don't go anywhere at all."
Mrs. Babbidge chuckled, and Tarnover flushed.
"What I mean is, maybe they just stop being in one place then suddenly they're in the next place."
"If only you could skate like that!" Jason laughed. "Bit slow, though.
Everyone would still pass you by at the last moment."
"They must go somewhere," young Dan said doggedly. "Maybe it's somewhere we can't see. Another sort of place, with other people. Maybe it's them that builds the birds."
"Look, freckleface, the birds don't come from Russ, or 'Merica, or anywhere else. So where's this other place?"
"Maybe it's right here, only we can't see it."
"And maybe pigs have wings." Tarnover looked about to march towards the cider and perry stall; but Mrs. Babbidge interposed herself smartly.
"Oh, as to that, I'm sure our sow Betsey couldn't fly, wings or no wings.
Just hanging in the air like that, and so heavy."
"Weighed a bird recently, have you?"
"They look heavy, Master Tarnover."
Tarnover couldn't quite push his way past Mrs. Babbidge, not with his sail impeding him. He contented himself with staring past her, and muttering, "If we've nothing sensible to say about them, in my opinion it's better to shut up."
"But it isn't better," protested Daniel. "They're blowing the world up. Bit by bit. As though they're at war with us."
Jason felt humorously inventive. "Maybe that's it. Maybe these other people of Dan's are at war with us — only they forgot to mention it. And when they've glassed us all, they'll move in for the holidays. And skate happily for ever more."
"Damn long war, if that's so," growled Tarnover. "Been going on over a century now."
"Maybe that's why the birds fly so slowly," said Daniel. "What if a year to us is like an hour to those people? That's why the birds don't fall. They don't have time to."
Tarnover's expression was almost savage. "And what if the birds come only to punish us for our sins? What if they're simply a miraculous proof —"
" — that the Lord cares about us? And one day He'll forgive us? Oh goodness," and Mrs. Babbidge beamed, "surely you aren't one of them? A bright lad like you. Me, I don't even put candles in the window or tie knots in the bedsheets anymore to keep the birds away." She ruffled her younger son's mop of red hair. "Every one dies sooner or later, Dan. You'll get used to it, when you're properly grown up. When it's time to die, it's time to die."
Tarnover looked furiously put out; though young Daniel also seemed distressed in a different way.
"And when you're thirsty, it's time for a drink!" Spying an opening, and his opportunity, Tarnover sidled quickly around Mrs. Babbidge and strode off. She chuckled as she watched him go.
"That's put a kink in his sail!"
Forty-one other contestants, besides Jason and Tarnover, gathered between the starting flags, though not the girl who had fallen. Despite all best efforts she was out of the race, and sat morosely watching.
Then the Tuckerton umpire blew his whistle, and they were off.
The course was in the shape of a long bloomer loaf. First, it curved gently along the edge of the glass for three quarters of a mile, then bent sharply around in a half circle on to the straight, returning towards Tuckerton. At the end of the straight, another sharp half circle brought it back to the starting — and finishing — line. Three circuits in all were to be skate-sailed before the victory whistle blew. Much more than this, and the lag between leaders and stragglers could lead to confusion.