Hi there,
Today, 8 March 2016, I was en route from Ottawa to bird Prince Edward Co. for the day but was delayed at Brockville — the 401 was a stand still. Over a span of 50 min, while basically parked on the highway, I enjoyed watching a large influx of geese heading SE over the highway. I tallied roughly 4000 Canada Geese and 450 Snow Geese flying SE, about 5 km east of Brockville. When I finally made it to Brockville, I decided that I would head to the lookout at Blockhouse Island and do a river watch. From 1100 – 1300 h I tallied: 3800 Snow Geese, 3000 Canada Geese, 165 Northern Pintail and 54 Common Merganser. All of the above waterfowl were heading E along the river, ‘pinched’ in to a relatively narrow (300 m wide approx) channel of open water. A wonderful spectacle!
Full eBird checklist here: http://ebird.org/ebird/canada/view/checklist?subID=S28049028
Directions to Blockhouse Island: From the 401, take exit 696 and continue south on Stewart Blvd (road 29) to King Street W (road 2). Head east on King Street W to Market Street W then south on Market Street. Market Street become Blockhouse Island Rd. once past Water Street W.