Gaby turned and started climbing over the dark terrain of Dione. Cirocco did as she had been told, falling in behind, finding herself accelerating without having intended to do so. She folded her arms back against her side, and the two of them streaked upward. This wasn't like flying in an airplane. There was no sense of strain, no laboring engines. They just went straight up, like rockets. Soon they were entering the mouth of the Dione Spoke. Cirocco no longer felt any air resistance, though they must have been moving hundreds of miles per hour. Experimentally, she extended her arms, and felt no wind. Turning her hands or feet did nothing. She just followed Gaby.
The Dione Spoke, like all of the six spokes of the great wheel, was oval in cross-section, about a hundred kilometers along one axis and fifty along the other. It joined the rim in a vast, bell-shaped flare of tissue that gradually became the arched rim-roof. At the top of the bell was a sphincter that could be completely closed. At the other end, near the hub, was another sphincter. By opening or closing these valves and by flexing the three-hundred-kilometer-high spoke walls, Gaea pumped air from one region to another, heating or cooling it as needed.
Except for the Oceanus Spoke, which was barren, the interiors of these towering cylinders supported life in abundance. Huge trees grew horizontally from the vertical walls. Complex eco-systems flourished in the labyrinth branches, in hollows of the trees, and in the walls of the spoke itself.
There were dozens of species of angel in Gaea, most of them too dissimilar to inter-breed. The Dione Spoke supported three species-or Flights, as they called themselves. At the top, where gravity was almost nonexistent, were the spidery Air Flight: dwarves among angels, with translucent wings and skin, ephemeral, not too bright, more like bats than birds. They seldom landed anywhere except to lay eggs, which they abandoned to fate. They lived on a diet of leaves.
The middle part of the spoke belonged to the Dione Eagles, related to Eagle Flights in Rhea, Phoebe, and Cronus. Eagles did not form communities. In fact, when two Eagles met there was likely to be a bloody fight. Their young were born live, in mid-air, and had to learn to fly on the long fall to the rim. Many of them did.
But the Airs and the Eagles were in the minority. Most Gaean angels nested and nurtured their young. There were a lot of different ways to go about it. One species in Thea had three sexes: cocks, hens, and neuters. The hens were flightless and huge, the cocks small and savage. The neuters were the only intelligent ones, and they cared for the young, which were born alive.
The Dione Supra Flight-badly named, in Cirocco's opinion, as their territory was at the bottom of the spoke-were peaceful, community-oriented beings. They built big beehive-shaped nests in the trees out of branches, mud, and their own dried feces, which contained a bonding agent. As many as a thousand Supras might live in one nest. Their females gave birth to things called placentoids, a sort of mammalian egg containing an embryo which had to be attached to the living flesh of Gaea. In this way the females never grew too pregnant to fly and the young could grow quite large before being detached from the womb. Like humans, Supra infants were helpless for a long time. They learned to fly in six or seven years.
Cirocco liked the Supras. They were more approachable than most angels, had even been known to come trading in Bellinzona. They used tools more than most angels did. Cirocco knew it was illogical and prejudiced-it was not the fault of the Eagles that they were so heartless, it was simply their biology-but she couldn't help it. Over the years she had had many Supra friends.
Like most angels, Supras looked like very thin humans with giant chests. Their bodies were black and shiny. Their knees bent in either direction, and their feet were bird-claws. Their wings were mounted low on the back, below the shoulderblades. When folded, the wing "elbow" joints towered over their heads, and the tips of the long primary feathers trailed far below their feet.
Angels had one thing in common with Titanides. Both were relatively new creations, made by Gaea as variations on the human theme. Even with hollow bones, huge wings, giant muscles, and no fat at all, a flying human had taxed Gaea's design capability to the limit. The larger angels could lift more than their own weight at the rim. They preferred to live in the lower-gravity regions of the spokes.
In addition to their nesting habits, two other things set the Supras apart. One was their coloration. Females had green wing feathers and males had red. The caudal empennage of both sexes was black, except in mating season, when the females grew peacock fans and put on glorious displays. They had no other external sexual differentiation.
And they didn't have names. Their language did not contain first-person singular pronouns. "We" was as near as they could come to it, and yet they were not communal minds. They existed as individuals.
This made communication with them somewhat difficult. But it was worth the effort.
The Supras did not seem at all startled to see Gaby and Cirocco fly up to the nest and land, light as a feather, near the big opening in the top. It was raining in the spoke, and the smiler-hide cover had been pulled across to keep the water out. Gaby ducked under it and Cirocco followed her into darkness.
Oddest damn dream, she thought. One minute she could fly, but as soon as she set down on the nest she was back to her normally awkward method of blundering through the Supra nest.
A Supra staircase was a series of rods embedded on the adobe-like nest wall. The angels grasped the rods with their feet; all Cirocco could do was hang on with both hands and try to pretend it was a ladder as she backed down it. In the same way, the Supra equivalent of a comfortable chair was a long horizontal pole. They perched on them effortlessly.
She and Gaby worked their way toward the back of the nest, which was built against the spoke wall. Dotted along the wall were Supra babies in little pockets of Gaea's flesh. Some were no bigger than ostrich eggs, while others were as big as human infants and needed a lot of tending so they wouldn't break their umbilical cords. Child care was done by all members of the flight, in rotation. Supras didn't imprint on a particular mother or father.
The base of the placentoid rookery was the only spot in the nest with a spot level and wide enough to be used as a floor. Gaby and Cirocco went there and sat, cross-legged. Cirocco remembered she should have brought a gift. Anything would do-Supras loved bright things. It was a polite way to begin a visit. But she didn't even have clothes.
Gaby didn't, either, but with a magician's flourish she opened her hand and produced an old plastic bicycle reflector that shifted colors when it was turned. The Supras loved it, passing it back and forth.
"It is a fabulous gift," one of them said.
"Most luminiferous," agreed another.
"Elegant and tricksy," one suggested.
"We are most brilliantly aghast," a fourth chimed in.
"It will be enshrined."
They chattered their appreciation for some time, and when Cirocco and Gaby could get a word in, they praised the beauty, wit, poise, wisdom, and elegant flight characteristics of their hosts in the most extravagant terms. They applauded the rookery, nest, branch, wing, squadron, and Flight of the inestimable Supras. One rutting female was so moved she spread her tail feathers in sexual display. Though Cirocco could barely see it in the dunness, she joined the others in praising the female's fertility and prowess in terms so explicit they might have made a whore blush.
"Would you take some ... food?" one of them asked. The others looked away and kept a modest silence. It was a new thing for the Supras, something they were cautiously trying out in their dealings with humans. By custom, food was never asked for or offered outside of one's own nest. Food would not be refused a starving Supra from another nest, but most Supras would rather die than ask.