Since the last update, the new species are:
Boreal Owl: January 2 (Ottawa)
Brant: January 3 (Long Beach, Wainfleet)
Baltimore Oriole: late November to December 4 (Essex County)
Laughing Gull: January 13 (Niagara River)
The bird identified as a Blackpoll Warbler at Sedgewick Park in Oakville has been subsequently photographed and seen by many and is a Bay-breasted Warbler. This is only the 3rd winter record, and is by far the latest record with the previous two records being in early December. It is still present.
Some of the more notable misses so far include California Gull, Pomarine Jaeger, Barn Owl, and Blue-headed Vireo. Send me an email if you know of any species that would be new to the winter list.
Good birding, Josh