Apparently there are a few collective nouns for pelicans, a “pod”, a “pouch”, a “scoop”, or a “squadron”, or if they are seen fishing together, a “fleet”.
After this group had their fill of free fish then charged heavily over us like airborne armoured tanks, and seconds before being lashed by a dramatic rainstorm on the way home from our walk, I’m leaning towards “squadron.”
Either way it was glorious.