Proof of motion: review

Captured from the live page at 1280×800 with the simulation clock stepped at 40 ms (25 fps). These are the actual runtime renders, not mock-ups. Open Pico · Asset inventory

Key poses, as the runtime shows them

Fourteen key moments from perched through takeoff, flight, landing and back to perched — Every frame is an approved illustration from the pack. Position, tilt and scale normalisation are rigid transforms of the whole image.

Animated flight from the right rock to the left rock — Take off & fly: home rock → far rock (≈4.3 s).

Animated flight off the left edge and back in from the right to the home rock — Return to perch: a lap off-stage, because no right-facing flight art exists (≈6.5 s).

Known transition issues

Crouch → lift-off is the biggest cut. The feet stay planted, but the body rises ~70 world units in one frame because no push-off in-between exists.
Touchdown (08) → crouch → master: three hard cuts that fold open wings away. They read as limited animation, not as continuous motion.
Flap cycle (02 → 04 → 05 → 07) reads as flapping but isn't loop-perfect; 04 is a transitional pose with a slightly odd silhouette.
Head size in flight is ~15% smaller than on the perch. This is a deliberate compromise that keeps body mass continuous (see the inventory page).
The return trip leaves the stage and comes back in from the right; Pico never visibly turns around.
The environment is a placeholder backdrop for this milestone only.