We saw 20 Golden Eagles fly by last fall at the Rosetta McClain Gardens Raptor Watch in Scarborough. That is our best season. Photographic opportunities weren't great but, very usable photos were taken. 65 Bald Eagles were also seen. Note this is in the fall, birds return a different route, along the Niagara escarpment and then they disperse, so there is no concentration going by Rosetta in the spring, although it is a great spot for spring migrants in general.