# Birds — component for particles & physics (html)

> **For AI agents:** find the right skill in one call — `curl -s "https://skills.varg.ai/api/search?q=<what the person wants>"` returns the matching use case and the best skills with install commands, as markdown (Russian works too). Full index: https://skills.varg.ai/llms.txt. Every page has a markdown twin: add `.md` to its path. Before generating anything, show the person the options on the use-case page.

A flock of small pink low-poly birds wheeling and scattering across a deep navy sky

- **Install:** `npm i vanta`
- **Registry:** vanta · **Framework:** html · **License:** MIT
- **Docs and preview:** https://www.vantajs.com/?effect=birds
- **Source:** https://github.com/tengbao/vanta/blob/master/src/vanta.birds.js
- **Example:** https://skills.varg.ai/previews/lib-vanta-birds.mp4?v=344907 (Rendered by varg from the library’s own code (Vanta.js · rendered by varg))
- **Time:** Drive from the frame. Runs on its own clock (requestAnimationFrame, timers, springs or CSS). Drive it from frame / fps before rendering, or the render drifts.
- **Runs:** local render, free
- **Aspect:** any

## Prompt that renders it frame-exact

Use the Vanta.js Birds effect (https://www.vantajs.com/?effect=birds, MIT, source github.com/tengbao/vanta/blob/master/src/vanta.birds.js) as the full-frame background behind the opening title. Load three.js r134 and vanta@0.5.24/dist/vanta.birds.min.js, then mount VANTA.BIRDS on a div that fills the frame with mouseControls, touchControls and gyroControls set to false. Birds is a GPU flocking simulation that reads performance.now every requestAnimationFrame, so make it deterministic: seed Math.random before init, swap performance.now and requestAnimationFrame for a virtual clock that advances 1000/fps ms per video frame, and render frames in order from frame 0 (the flock carries state, so replay from the start after a backwards seek). Take backgroundColor, color1 and color2 from the brand palette, keep quantity at 3–4 so the title stays readable, and lower speedLimit for a calmer flock.

## Used in

- [Top-N listicle](https://skills.varg.ai/video/listicle.md)
- [Quiz, poll & would-you-rather](https://skills.varg.ai/video/quiz.md)
- [Bar chart race](https://skills.varg.ai/video/chart-race.md)
- [Science what-if explainer](https://skills.varg.ai/video/science-explainer.md)
- [Lyric video](https://skills.varg.ai/video/lyric-video.md)
- [Audio visualizer](https://skills.varg.ai/video/visualizer.md)
- [Logo sting](https://skills.varg.ai/video/logo-sting.md)
- [Countdown & launch timer](https://skills.varg.ai/video/countdown.md)

## More particles & physics

- [Confetti](https://skills.varg.ai/component/hf.confetti.md) — `npx hyperframes add confetti`
- [Liquid Metal](https://skills.varg.ai/component/hf.liquid-metal.md) — `npx hyperframes add liquid-metal`
- [Particle Image Reveal](https://skills.varg.ai/component/hf.particle-image-reveal.md) — `npx hyperframes add particle-image-reveal`
- [Pendulum Swing](https://skills.varg.ai/component/hf.pendulum-swing.md) — `npx hyperframes add pendulum-swing`
- [Snow](https://skills.varg.ai/component/hf.snow.md) — `npx hyperframes add snow`
- [Spiral Galaxy](https://skills.varg.ai/component/hf.spiral-galaxy.md) — `npx hyperframes add spiral-galaxy`