According to former chief Lawrence Courtoreille, starting in 1944 many Dene people were induced by the government of to transfer their registration to the Mikisew band, including Courtoreille's own mother, leading to "a little over fifty percent" of the Mikisew Cree band members having some Dene heritage as of 2022[update].
[3] Dene people were denied access to hunting, fishing, and gathering within the boundaries of Wood Buffalo National Park unless they switched their registration, and were threatened with eviction from the Birch River settlement.
The group signed a treaty in 1986 with Canada establishing several reserves.
The Mikisew Cree won a case in the Supreme Court of Canada in 2005 over title interests to areas of the Wood Buffalo National Park.
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