Flocks & patterns

Murmuration

A thousand birds. No leader.
A little attention to the neighbours.

Flock size

Changing flock size restarts the flight.

Stay together 1.0×

Watch the flock turn, then send in a hawk.

Each bird keeps its space, matches nearby birds, and turns towards them. The larger, brown bird is the hawk.

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Murmuration

A thousand birds turn above a sunset marsh. Release a hawk, watch the flock scatter, and explore how local connections shape the sky.

A dark flock of birds curling above a quiet marsh, with a golden sun low in a peach and violet sky.

Enable JavaScript in a browser with WebGL 2 to run this interactive simulation.

A murmuration is a moving flock of birds. Watch how small turns by neighbours become patterns across the sky.

Each bird keeps some space, matches the direction of nearby birds, and turns towards them. There is no leader.
Stay together changes how strongly birds move towards their neighbours. At zero, birds still avoid crowding and match directions.
A hawk makes nearby birds turn away. It pursues birds briefly, then flies away. No birds are caught in this model.
The flock stays above the marsh by gently turning back at the edges of its flying space.

Try this: Release a hawk at ¼× and watch the flock react. Restart with the same seed and change Stay together to compare. Scene only hides the controls for recording; Escape or Show controls brings them back. This is a simplified illustration of flocking.