Check often for opportunities
Saskatchewan Ministry of Environment is looking for volunteers for Ferruginous Hawk surveys, late April to early May. Call for volunteers - Ferruginous Hawks
Parks Canada - Grasslands National Park is looking for volunteers for the Canadian Prairie Dog Ecosystem Research Project. People interested in volunteering are encouraged to apply quickly! For more information, or to apply, click here. Here is the Application form.
The Nature Conservancy of Canada has a variety of volunteer projects that interested people can participate in. Visit their website for events throughout the spring, summer and fall.