Quorlin

Quorlins are the apex aerofauna of windswept coasts and high plateaus, found nesting on narrow sea-cliffs, spires of wind-polished basalt, and the rim of high mesas. They evolved enormous keel and wing musculature and highly specialized wing feathers that channel air into concentrated pulses; older sailors tell of Quorlins that could blow a tender boat onto a lee shore with a single, precise wingbeat. Despite legends that call them 'sky witches' or 'storm spirits', naturalists from the Guild of Tidal Observers catalog them as beasts — their prowess comes from anatomy and behavior rather than arcane effect. Quorlins live in small, territorial flocks of three to seven adults and defend a radius of nesting cliffs by driving updrafts, harrying flying predators, and performing coordinated wind-bursts to dislodge eggs of ground-nesting competitors. The scholar Meris Ketter of Greyfen recorded an encounter with a lone Quorlin that used a sustained cross-burst to strip an entire raiding party's tents from their pegs during a sudden squall. Sailors of the Stormwardens treat a sighting of a Quorlin as both a danger and a blessing — danger for its precision wind-strikes, a blessing because flocks predict the coming of strong, steady winds suitable for passage.

A Quorlin is roughly the size of a large hunting dog: 4–5 feet from beak to tail, with a two-and-a-half to three-foot neck and a wingspan of 10–12 feet. The head is goose-like but elongated, with pale, almost translucent eyelids and a hooked tip to the beak. Its plumage is dense and layered in long, tapered feathers along the wings' trailing edge that are ridged on their undersides like the vanes of a sail — these ridges are the structures that channel and focus air. The breast and belly are heavily muscled, with a broad, keeled sternum and visible tendon bands around the shoulders. Feathers along the leading edge of the wing are stiff and glossy; primaries bear serrated micro-flanges. The legs are proportionally long, ending in webbed feet with callused pads used when bracing against sudden gusts. Coloration is a wind-swept grey with salted white streaks; feathers are matte, with feather shafts showing darker contrast. Scars and nicked feather tips are common in older birds. When preparing a wind-burst the throat pulses and neck feathers flatten, and the entire plumage seems to hum as air gathers.