In Alberta both the Adoption Summary and the Affidavit of the Birth Mother (and BDad) are supposed to have a statement on them regarding the child's ethnic heritage and if Aboriginal heritage is indicated then if the birth parent is registered with a band we are supposed to include that information. If the birth parents are registered but do not wish to consult with the band (as in Roo's case) then a statement to that fact is usually added to the Affidavit as well.
(Can you tell I have had to draw up a bunch of these?! LOL)
Carrie