Pigeon takeoff

The pigeon leaves the ledge cleanly with wings fully extended at the top of the stroke.

The pigeon lifts off cleanly, feet separating from the stone, with wings fully extended at the top of the stroke.

The pigeon crouches and lifts off cleanly, feet separating from the stone, with wings fully extended at the top of the stroke.

Correct crouch, wing extension and push-off from the ledge, clean separation from stone.

Wingbeat, neck and push-off all anatomically correct through the full takeoff sequence, verified frame by frame.

Wingbeat, feet push-off and climb trajectory all anatomically and aerodynamically correct.

Wings articulate correctly and feet cleanly leave the ledge.

Wings articulate correctly and feet cleanly leave the ledge.

Authentic wing articulation through thrust and glide.

Bird actually leaves the ledge and completes a convincing flight with correct wing/tail mechanics -- unlike Runway Gen-4.5 and PixVerse 5.5, where it never took off.

Clean take-off with wings fully extended, followed by a cut at about 4 seconds to a wider shot of the bird in flight. Checked frame by frame.

Correct wing/leg anatomy; wingbeat rate a touch slow for a real pigeon.

Sound wing/foot anatomy, minor wingtip smearing on fast flaps.

Wing trailing edge shows a stacked/ghosted-feather look during the fastest upstroke; verified via frames -- consistent with motion-smear artifacting rather than full anatomical breakdown.

Bird flaps vigorously but never actually leaves the ledge -- verified via frame extraction (final frame still shows both feet planted, wings spread but airborne motion never happens): confirmed prompt/physics failure, the requested takeoff simply doesn't occur.