The spanner was visible from the railing, which was not the same thing as being reachable.
It lay in a narrow fissure between two ridges of Mercy’s outer armor. Sunlight caught its polished jaw whenever the city shifted. Around it grew a mat of gray-green fibers, stiff enough to hold grit but too thin to bear a person’s weight. A kite stood on the higher ridge, watching the crack with its head tilted.
“You could buy another one,” Neri said.
“I could.”
“You could borrow Jem’s.”
“I am.”
“You could stop looking at the crack as though it had insulted your family.”
“It has my spanner.”
She leaned on the rail beside him. Below, Rysa’s workers were unloading a cart of replacement filter cloth. The kites had moved away after the food was thrown, but one had remained near the station. It had not attacked anyone that morning. It had also refused to leave the ridge.
“Is it guarding the tool?” Iven asked.
“Probably not.”
“Then it’s doing a poor job of making that clear.”
Kesh joined them with a long canvas bag. She had heard about the kites from Rysa and wanted to inspect the station roof. When Iven pointed out the spanner, she studied the ridge rather than the tool.
“There’s a nest in the crack,” she said.
“How can you tell?”
“The bird keeps looking below its feet. And the fibers have been pulled together there.”
The kite lifted its head and gave the rattling cry Iven remembered from the previous day. A smaller sound answered from inside the crack.
Neri looked at him. “Your spanner has children.”
“That’s inconvenient.”
Kesh opened her bag and took out a pair of thick gloves, a folded net, and a length of flat metal with a padded end. “We can look from the station. Don’t go down there until we know whether the nest can be moved.”
“Why move it?”
“Because the station’s workers need the vent route, and the birds will defend the nest whenever someone crosses.”
“Could we close the route for a few days?” Neri asked.
“Possibly. We need to ask the people who use it before we decide.”
They found Lenn at the station with Pera. He had brought her to show her the door now opened properly and to collect the lunch tin, which had been recovered from the slope with a dent in its lid. Pera held the tin proudly. She also held a small drawing of a bird with six claws on each foot.
“That’s more claws than it had,” Iven said.
“It has enough.”
He could not argue with that.
Lenn showed Kesh the station roof. From the rear window they could see into the upper part of the fissure. A nest of woven fibers sat between two armor ridges, sheltered from the wind. Two young kites huddled inside. One held its head up; the other lay on its side.
“The turn shook them out of their usual place,” Lenn said. “I thought they’d move on.”
“They may when the young can fly,” Kesh replied. “How long do you need the route?”
“Every morning. The lower vent feeds three workshops and the drying rooms. I can use the long path, but it adds an hour and crosses the damaged rail.”
Neri looked at the map on the wall. “Could the cooperative move the vent controls to the station side?”
“Not without opening the housing.”
“How long would that take?”
“Half a day, if the parts come apart.”
Iven thought of the damaged fan at the upper circulation station and the worker searching for missing blades. There seemed to be no shortage of machines whose useful pieces had chosen separate directions.
Kesh watched the nest through the window. “The smaller one isn’t moving much.”
“Is it hurt?” Pera asked.
“Maybe. Or cold. We need a closer look.”
The adult kite landed on the ridge. It spread its wings over the nest, hiding both young from view. Its feathers were gray at the base and almost black at the tips. A small white mark crossed one wing, perhaps where a feather had broken.
“Can we feed it?” Pera asked.
“Not from the walkway,” Kesh said. “If it learns that food comes from people, it may come closer to them every day.”
Pera considered. “Can we leave food farther away?”
“We could. But if we lure the adult away, we still need to know whether the nest is safe.”
Iven studied the fissure. The spanner lay above the nest, caught between a stone-like ridge and a clump of fibers. A line cast from the station bracket could reach it. The problem was not the distance. It was what would happen if a metal hook scraped the ridge above two frightened young birds.
“I’m not taking the tool until you’ve looked,” he said.
Neri gave him a sideways glance. “That must have cost you.”
“I’ll recover.”
They made a plan with Lenn. He would close the vent route for the morning and use the long path. Rysa’s crew would keep carts away from the exposed deck. Kesh would approach the nest from the station side with the padded tool and net, while Iven held a safety line. Neri would watch the support and tell them if the armor shifted. Pera would stay inside with her father.
“I can watch,” Pera said.
“You can,” Kesh replied. “From the window. If the bird comes toward you, close the shutter and move back.”
Pera put one hand on the shutter latch, ready to demonstrate. Lenn moved it gently away.
“Only if Kesh tells you,” he said.
Kesh climbed through the station’s rear opening onto a narrow ledge. Iven followed as far as the bracket, tied the safety line, and tested it. The line was real rope, not the hook pattern; he wanted Kesh to remain attached even if he had to change his active loadout.
The adult kite rose from the nest at once. It circled overhead, crying. Kesh crouched, keeping the padded tool between herself and the bird without swinging at it. Iven seated plate brace, spring step, and bell pulse. The hook and winch remained in his library, available if he found a safe moment to switch.
The kite dropped. Iven sent a short bell pulse into the station’s iron gutter. The note rang across the ridge. The bird swerved, not away from the nest but away from the sudden sound. Kesh took the opening to reach the fissure.
The larger young kite raised its head and opened its beak. Kesh did not touch it. She used the padded tool to lift the fibers around the smaller bird. A thin length of wire had caught around its leg and the edge of the nest. The wire ran upward into the crack, where it had wrapped around Iven’s spanner.
“There you are,” he murmured.
“What?” Neri asked from the window.
“My tool has made friends.”
Kesh held the young bird gently and worked the wire free from the nest. Its leg moved, but the wire had cut into the skin. She called for Sera, then remembered the doctor was at the clinic on the other side of the deck.
“I have dressings,” Neri said.
“Bring them to the window. Don’t come onto the ledge.”
The adult kite struck the station roof. Pera shut the shutter with both hands. Lenn called from inside that Sera was already on her way; Rysa had sent a runner when Kesh arrived.
Iven watched the adult circle. It came at him rather than Kesh, perhaps because he stood between it and the nest. He caught the first impact on the brace. The bird’s claws gripped the edge of the force and slipped. It wheeled around the roof and came again.
He stepped sideways and used spring step to cross a short gap between two sound ridges. The burst carried him onto a broader piece of armor. He landed with his knees bent and turned to face the bird before it could reach Kesh.
The kite hit him from the side. Its wing struck his shoulder, and the sore place from the collapse flared. He caught the creature’s body with the brace and pushed it away. It landed on the ridge opposite him, beak open, wings raised.
“I’m not after them,” he said.
The kite did not appear persuaded.
Sera arrived with Rysa and came through the rear opening. She looked at the nest, the adult, and Iven’s position.
“Can you keep it there?” she asked.
“I’m trying.”
“Try without letting it bite you.”
“That was my second plan.”
Kesh passed the injured young bird to Sera. The doctor covered its head with a light cloth, cut the remaining wire away, and cleaned the wound. The leg was swollen but not broken. She wrapped it with a narrow dressing that would not bind the joint.
“It needs warmth and time,” she said. “The adult will do the rest if it accepts the young one back.”
Kesh replaced the bird in the nest. The larger youngster pressed against it immediately. The adult kite gave another cry. Iven backed toward the station, keeping the brace ready but lowered.
The bird hopped to the nest and spread its wings over both young. It watched them from above, head moving sharply with every sound. It did not leave.
“Good,” Kesh said softly. “Now the tool.”
Iven reseated hook cast in place of the bell while sheltered by the station wall. He aimed at a loop of wire protruding above the fissure, not at the nest. The short tether caught. He drew it gently toward himself, pulling the wire and the spanner free together. The tool scraped once against the ridge, then swung into his hand.
The adult kite raised its wings. Iven froze. Kesh watched the bird, then motioned him back. They withdrew to the station without another attack.
Inside, Pera opened the shutter a little. “Did you save it?”
“We freed its leg,” Sera said. “The rest depends on whether it can heal and whether its parent keeps it warm.”
“Will you come back?”
“Kesh will check from a distance.”
Pera looked at the spanner in Iven’s hand. “Did it save your tool too?”
“It did. It was holding the wire.”
“Then you should thank it.”
“I tried. It wasn’t listening.”
Kesh did not put away the wire. She laid it across the window ledge and checked its end against the fibers in the nest. One end was twisted into a loop; the other had been cut cleanly. It had not grown there and it was not part of Iven’s tool.
“From the station?” Lenn asked.
He brought a piece of spare tie wire from a drawer. It was thicker and had a different finish. Kesh compared the two, then looked toward the shadowed vent channel beneath the ridge. Several loose feathers lay along its edge. One had a narrow slice across the shaft.
“Something carried this up from below,” she said. “Or a person left it where the nest material was gathered.”
“What would carry it?” Pera asked.
“I don’t know yet.” Kesh showed her the cut feather. “A bird could break this by pulling it. A wire edge could cut it. We can see the cut; the rest is a question.”
Lenn said two workers had heard scraping below the vent channel before dawn. They had assumed a loose flap was moving in the wind. Kesh asked him not to send anyone down the channel alone until she had looked at it. He agreed and pointed out a maintenance hatch on the far side of the station, half hidden behind a bank of old pipes.
“I’ll find another way to the controls today,” he said. “The housing can wait until we know what’s under it.”
Kesh wrapped the wire separately from the dressings. Iven recognized the way she made room for an observation without turning it into a verdict. It also meant the next trip below the station would not be simply a matter of finding his tool. Whatever had brought wire into a young bird’s nest had been moving through a passage used by workers.
The long route remained open for Lenn’s work. Neri agreed to inspect the vent controls that afternoon and give him a price for moving them. Rysa arranged a canvas screen along the exposed deck so carts could pass without presenting the birds with a row of uncovered baskets.
Iven cleaned his spanner at the station sink. The jaw had a nick where it struck the ridge, but the adjustment still moved. He filed the nick smooth with a tool from Lenn’s kit, checked the fit on a bolt, and returned it to his coat.
“You could still buy another,” Neri said.
“I might. Then this one can train it.”
She held out her hand. He gave her the spanner. She turned the adjustment, tested the jaws, and handed it back.
“It’ll do.”
“That sounds like praise.”
“It sounds like a tool that works.”
On the bridge back, they passed Pera and Lenn walking together. He carried the empty lunch tin; she carried a bundle of filter cloth. The adult kite remained over the nest, a dark shape against the pale armor. Iven kept one eye on it until he reached the gate. It did not follow.