Recreating a bird animation: alexwlchan.net/2025/swift-b...

I learnt a bunch about animation on the web by reading the Swift.org source code, like:

✨ Using a dash pattern to draw partial paths
✨ HTML5 Canvas and globalCompositeOperation
✨ Anime.js
✨ MutationObserver
✨ prefers-reduce-motion: reduce