@SuperbusVictor: It's not a Canadian goose. Canada geese have pretty distinct colour patterns (well, not necessarily compared to other types of goose, but certainly when compared to this).
I don't know what type of geese they're supposed to be. One presumes, not a brant :'p (I can only assume a brant isn't considered a goose colloquially in Chinese XD They are technically geese—thus our protagonist is a silly goose ~w~)
Glancing at photos and habitats of different breeds, I'm guessing, mostly from the prominent forehead-piece, that they're
swan geese.