Hi all, could you have a look and tell me what kind of butterfly this is?

it has the look of a swallowtail to me, but it's not yellow, but it did have a bit of blue on the wings, but it also has orange which I've never seen.

also it's smaller than our normal swallowtails here, like the wings are small compared to his body, at least in my opinion. Also, not sure if this is relevant or not, while eating at the flower he was constantly keeping his wings pumping almost like a hummingbird, rather than landing on a petal and standing still. From across the yard I actually thought it was a hummingbird moth.

thanks!