I am working on a Y.A. fantasy novel. One of the things I like is using little things from real life as inspiration for characters and to group them together. As such, I had a group of villains that work as main antagonists. I wanted to get inspiration from birds but not go with your usual eagle or falcon, so I took the blue-capped ifrit. The blue-capped ifrit is a very small bird that is one of the very rare types of birds that is venomous to the touch. I took the cassowaries which is huge and aggressive, and then I took the laughing kookaburra which is a small bird of prey that has the characteristic of. a distinct laughter.
I liked the idea of a villainous figure, leader of a small group of dangerous figures, that would often slip out small giggles and laughter here and there, but there are only so many ways to artfully describe "a giggle" and a "coy laughter" or a "discrete chuckle" before it gets repetitive or annoying.
How would you go about it? Make it more sparse and distinct, more subtle and frequent? This goes into a lot of the characters personality and presence, so I would like it to stand out to the reader without it breaking the flow.