http://www.mnr.gov.on.ca/mnr/csb/new...ug17fs_07.html - scroll down to the end
Diseased or Dead Wildlife
If you suspect there is a public health risk from a sick wild animal, such as rabies, or you or your pet had contact with a suspected rabid animal, contact your local Public Health Unit immediately. Rabies is fatal for humans and animals if not treated. Symptoms of rabies and several other diseases in animals can include tremors, aggressive behaviour, partial paralysis, convulsions, and loss of fear of humans.

To report a dead crow, raven or blue-jay bird contact your local Public Health Unit. To report other dead animals or birds contact the Canadian Cooperative Wildlife Health Centre (CCWHC).
Contact Information:

* Public Health Units:
o call 1-866-532-3161 between 8:30 a.m. and 5:00 p.m. Monday to Friday, or visit http://www.health.gov.on.ca/english/...phuloc_mn.html for a list of offices.
* Canadian Cooperative Wildlife Health Centre:
o call 1-866-673-4781, or visit http://www.inspection.gc.ca/english/toce.shtml.