Searching "giga-goose" before June 3rd brings up basically nothing, someone last year called this species a "gigantic goose" and a bunch of unrelated things. I wonder where the nickname came from, and how important it was towards getting this article published.

Also I wonder if there's a move away from "mega" towards "giga" as mega anything seems kinda small. I can't see "tera" ever being a thing, I can't think of an independent connection to some other word meaning large.