I work as a First Nations consultant for NGOs and not for profits and typically outreach to First Nations is a lengthy and time-consuming process involving making a list of desired First Nations whom you wish to contact, acquiring contact for their band offices, then reaching out by phone and email over the course of months to try and get ahold of them. In the Pacific Northwest were you have an absolutely insane diversity of First Nations, many of which have 100 members or less and all of which are responsible for fielding numerous referrals, contact can be difficult.
In the case of iNaturalist, since all that’s required is confirmation of a translation dictionary to use, I imagine it would be as tedious a process. I have a personal database of Band Offices and contacts in B.C. I’d be happy to lend to the cause, as well as contacts throughout Canada and some of the northern States.
Not sure how to start a working group via iNaturalist, but would love to participate/coordinate.