These 2 baby ducks were on the Bow River - can one of my knowledgeable bird friends please tell me what they are?

I searched the internet I wasn't successful in identifying them since the adults look so different from the immatures.

Wasn't sure if they were ruddy ducks, harlequins, or maybe they aren't even ducks at all...geese?

So much smoke in Alberta from BC forest fires I have had to stay inside for 2 days.