Hi Murph,
I have at home a database containing over 30,000 sightings of birds in "our" Témiscamingue, east of the lake. The older datas are from 1967. I can provide the arrival and leaving dates we have for migrating species. Most of the early and late dates come from Ville-Marie area.
I also have seen some birds on the lake flying to your side, so I know they were present in both provinces such as Parasitic Jagr, Caspian Tern and Black Vulture (by heart). They're all accepted by Qc rare bird commitee based on the description given at the time they were seen. I'll prepare a folder if you wish to use it.