I used poisson sampling to make many points on the canvas, and then save the active point which each point was created from and itself, save that to an array, now I know who is "child" of whom, and I can then make a tree structure out of that, the butterflies are from the trees that are too small.

Inspired by this post on twitter by @95_percent_ : https://twitter.com/95_percent_/status/1512035078586699776
shout out to 95_percent_ <3