Ravens are becoming a much more common species south of the shield as the forests mature. That said the most famous pair along the escarpment in grey county nests in a grain silo in the village of Ravenna (yes that is the actual town name). Buy a pie at the general store (they are quite tasty) and look across the road when you exit, at the silo and that is the nest. Ravens prefer to use cliffs, mature trees and power tripods (i.e. large power line towers) In the grey bruce and western simoce county there is at least a dozen territories currently.
Further south along the escarpment there is a nesting pair in the quarries just NW of Milton.
Last years Common Raven breeding attempt in the Rouge Park was the first actual pure raven nest in over 80 years in the city of Toronto. There was a crow /raven nest on a building in the former psych hospital lands known now as Colonel Sam Smith park, in the late 80s or early 90s. The exactly year the Cravens were raised escapes me tonight.
In Durham Region there are territories in Seaton (north pickering), Durham forest (oldest nest and my personal favorite) Chalk lake, sw Uxbridge, Long Sault, Ganaraska Forest( 1-3 nests), and Tyrone area. Like the Bald Eagles, Common Ravens are recolonizing their former breeding range as well.
I would be suprised if York region did not have 1-2 pairs at least, up on the Moraine as well.
