Page 14 of the Ontario Hunting Regulations:
"To hunt in Ontario, most Ontario residents need a hunting
version Outdoors Card and all applicable licence tags and
licences. There are two exceptions to this.
...
The second exception is members of Aboriginal communities
with Aboriginal or treaty hunting rights in Ontario. These
hunters are not required to be in possession of an Outdoors
Card provided they are hunting for food, social or ceremonial
purposes within their traditional or treaty area or they are visiting the traditional area of another First Nation and have received proper written permission to hunt from that
First Nation.
All other Ontario residents, including Aboriginal persons, either hunting outside of areas where they have Aboriginal or treaty hunting rights OR hunting in areas for which they have not received proper written permission to hunt, must have a hunting version Ontario Outdoors Card and all applicable licences."