A formerly used flag of the Tohono O'odham Nation, from 2012 to 2015. This flag had 12 feathers instead of 11, symbolizing the addition of Hia-Ced District as the 12th to the nation. Though, the Hia-Ced District was abolished in 2015 and the 11 feather flag has been readopted since that year.
Own work
Flagvisioner