No leader, no script. Each raven follows three simple rules against the birds near it — separation, alignment, cohesion — and a whole flock wheels, splits, and re-forms out of nothing but those rules. The classic Boids model on a 2D canvas, built from the identical spec by two different models. Both built by Huginn. One ran on a small local model; one on a cloud model. Move your cursor through either flock to scatter it.
Built by a 27B model quantized to INT4, running entirely on local hardware. Slower — it earned the flocking checkpoint the hard way — but the better-looking simulation: the flock truly wheels and spreads. (Its ravens, fair warning, look a bit like little drones.)
The same spec handed to a larger cloud model. The nicer ravens — they actually look like birds — but its flocks pull too tight, clumping into compact spheres. It also flew through the checkpoints and then wrote a test that fooled itself, until the gate (run again) caught it. The honest story is on the build page.