Yeah, they have been know here by that name as well. Recently I was at a nature center that had all species of ducks found around NYS mounted high up on the walls near the ceiling.
Long Tail/ Oldsquaw duck is one of my favs and the name sign next to these did still say Oldsquaw. I asked about it though and they told me that Audobon changes names every so often and that the name was changed about 4 years ago.
Maybe in Canada you have your own guidelines and names???
* laughs like crow, soars like eagle with vision of hawk, haunts like loon & lulls like nuthatch ....tickle tickle, feather has most powerful medicine of all...makes you laugh *